diff --git a/core/modules/language/src/Plugin/Field/FieldWidget/LanguageSelectWidget.php b/core/lib/Drupal/Core/Field/Plugin/Field/FieldWidget/LanguageSelectWidget.php
similarity index 59%
rename from core/modules/language/src/Plugin/Field/FieldWidget/LanguageSelectWidget.php
rename to core/lib/Drupal/Core/Field/Plugin/Field/FieldWidget/LanguageSelectWidget.php
index 72396a8..e08a2e6 100644
--- a/core/modules/language/src/Plugin/Field/FieldWidget/LanguageSelectWidget.php
+++ b/core/lib/Drupal/Core/Field/Plugin/Field/FieldWidget/LanguageSelectWidget.php
@@ -2,10 +2,10 @@
 
 /**
  * @file
- * Contains \Drupal\language\Plugin\Field\LanguageSelectWidget.
+ * Contains \Drupal\Core\Field\Plugin\Field\FieldWidget\LanguageSelectWidget.
  */
 
-namespace Drupal\language\Plugin\Field\FieldWidget;
+namespace Drupal\Core\Field\Plugin\Field\FieldWidget;
 
 use Drupal\Core\Field\FieldItemListInterface;
 use Drupal\Core\Field\WidgetBase;
@@ -13,11 +13,11 @@
 use Drupal\Core\Language\LanguageInterface;
 
 /**
- * Plugin implementation of the 'langcode' widget.
+ * Plugin implementation of the 'Language' widget.
  *
  * @FieldWidget(
  *   id = "language_select",
- *   label = @Translation("Language"),
+ *   label = @Translation("Language select"),
  *   field_types = {
  *     "language"
  *   }
@@ -29,15 +29,12 @@ class LanguageSelectWidget extends WidgetBase {
    * {@inheritdoc}
    */
   public function formElement(FieldItemListInterface $items, $delta, array $element, array &$form, FormStateInterface $form_state) {
-    $language_configuration = \Drupal::moduleHandler()->invoke('language', 'get_default_configuration', array('node', $items->getEntity()->bundle()));
     $element['value'] = array(
-      '#title' => t('Language'),
+      '#title' => $this->t('Language'),
       '#type' => 'language_select',
       '#default_value' => $items->getEntity()->language()->getId(),
       '#languages' => LanguageInterface::STATE_ALL,
-      '#access' => isset($language_configuration['language_show']) && $language_configuration['language_show'],
     );
-
     return $element;
   }
 
diff --git a/core/modules/aggregator/src/Entity/Feed.php b/core/modules/aggregator/src/Entity/Feed.php
index 6532f36..ceb0090 100644
--- a/core/modules/aggregator/src/Entity/Feed.php
+++ b/core/modules/aggregator/src/Entity/Feed.php
@@ -153,7 +153,11 @@ public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
 
     $fields['langcode'] = BaseFieldDefinition::create('language')
       ->setLabel(t('Language code'))
-      ->setDescription(t('The feed language code.'));
+      ->setDescription(t('The feed language code.'))
+      ->setDisplayOptions('form', array(
+        'type' => 'language_select',
+        'weight' => 2,
+      ));
 
     $fields['url'] = BaseFieldDefinition::create('uri')
       ->setLabel(t('URL'))
diff --git a/core/modules/aggregator/src/FeedForm.php b/core/modules/aggregator/src/FeedForm.php
index f22de74..f05918d 100644
--- a/core/modules/aggregator/src/FeedForm.php
+++ b/core/modules/aggregator/src/FeedForm.php
@@ -23,26 +23,6 @@ class FeedForm extends ContentEntityForm {
   /**
    * {@inheritdoc}
    */
-  public function form(array $form, FormStateInterface $form_state) {
-    $feed = $this->entity;
-
-    // @todo: convert to a language selection widget defined in the base field.
-    //   Blocked on https://drupal.org/node/2226493 which adds a generic
-    //   language widget.
-    $form['langcode'] = array(
-      '#title' => $this->t('Language'),
-      '#type' => 'language_select',
-      '#default_value' => $feed->language()->id,
-      '#languages' => LanguageInterface::STATE_ALL,
-      '#weight' => -4,
-    );
-
-    return parent::form($form, $form_state, $feed);
-  }
-
-  /**
-   * {@inheritdoc}
-   */
   public function validate(array $form, FormStateInterface $form_state) {
     $feed = $this->buildEntity($form, $form_state);
     // Check for duplicate titles.
diff --git a/core/modules/block_content/src/BlockContentForm.php b/core/modules/block_content/src/BlockContentForm.php
index df923ee..e1070bb 100644
--- a/core/modules/block_content/src/BlockContentForm.php
+++ b/core/modules/block_content/src/BlockContentForm.php
@@ -103,24 +103,6 @@ public function form(array $form, FormStateInterface $form_state) {
     // names.
     $form['#attributes']['class'][0] = drupal_html_class('block-' . $block->bundle() . '-form');
 
-    if ($this->moduleHandler->moduleExists('language')) {
-      $language_configuration = language_get_default_configuration('block_content', $block->bundle());
-
-      // Set the correct default language.
-      if ($block->isNew()) {
-        $language_default = $this->languageManager->getCurrentLanguage($language_configuration['langcode']);
-        $block->langcode->value = $language_default->id;
-      }
-    }
-
-    $form['langcode'] = array(
-      '#title' => $this->t('Language'),
-      '#type' => 'language_select',
-      '#default_value' => $block->getUntranslated()->language()->id,
-      '#languages' => LanguageInterface::STATE_ALL,
-      '#access' => isset($language_configuration['language_show']) && $language_configuration['language_show'],
-    );
-
     $form['advanced'] = array(
       '#type' => 'vertical_tabs',
       '#weight' => 99,
diff --git a/core/modules/block_content/src/Entity/BlockContent.php b/core/modules/block_content/src/Entity/BlockContent.php
index e2320bd..f78d09d 100644
--- a/core/modules/block_content/src/Entity/BlockContent.php
+++ b/core/modules/block_content/src/Entity/BlockContent.php
@@ -156,9 +156,13 @@ public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
       ->setSetting('unsigned', TRUE);
 
     $fields['langcode'] = BaseFieldDefinition::create('language')
-      ->setLabel(t('Language code'))
+      ->setLabel(t('Language'))
       ->setDescription(t('The custom block language code.'))
-      ->setRevisionable(TRUE);
+      ->setRevisionable(TRUE)
+      ->setDisplayOptions('form', array(
+        'type' => 'language_select',
+        'weight' => 2,
+      ));
 
     $fields['info'] = BaseFieldDefinition::create('string')
       ->setLabel(t('Block description'))
diff --git a/core/modules/comment/src/CommentForm.php b/core/modules/comment/src/CommentForm.php
index 5cf5d28..eae1de8 100644
--- a/core/modules/comment/src/CommentForm.php
+++ b/core/modules/comment/src/CommentForm.php
@@ -161,15 +161,6 @@ public function form(array $form, FormStateInterface $form_state) {
       $form['author']['name']['#attributes']['data-drupal-default-value'] = $this->config('user.settings')->get('anonymous');
     }
 
-    $language_configuration = \Drupal::moduleHandler()->invoke('language', 'get_default_configuration', array('comment', $comment->getTypeId()));
-    $form['langcode'] = array(
-      '#title' => t('Language'),
-      '#type' => 'language_select',
-      '#default_value' => $comment->getUntranslated()->language()->id,
-      '#languages' => Language::STATE_ALL,
-      '#access' => isset($language_configuration['language_show']) && $language_configuration['language_show'],
-    );
-
     // Add author email and homepage fields depending on the current user.
     $form['author']['mail'] = array(
       '#type' => 'email',
diff --git a/core/modules/comment/src/Entity/Comment.php b/core/modules/comment/src/Entity/Comment.php
index 57c7287..827cc60 100644
--- a/core/modules/comment/src/Entity/Comment.php
+++ b/core/modules/comment/src/Entity/Comment.php
@@ -221,8 +221,12 @@ public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
       ->setRequired(TRUE);
 
     $fields['langcode'] = BaseFieldDefinition::create('language')
-      ->setLabel(t('Language code'))
-      ->setDescription(t('The comment language code.'));
+      ->setLabel(t('Language'))
+      ->setDescription(t('The comment language code.'))
+      ->setDisplayOptions('form', array(
+        'type' => 'language_select',
+        'weight' => 2,
+      ));
 
     $fields['subject'] = BaseFieldDefinition::create('string')
       ->setLabel(t('Subject'))
diff --git a/core/modules/contact/src/Entity/Message.php b/core/modules/contact/src/Entity/Message.php
index 20be2e8..0724312 100644
--- a/core/modules/contact/src/Entity/Message.php
+++ b/core/modules/contact/src/Entity/Message.php
@@ -144,8 +144,12 @@ public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
       ->setReadOnly(TRUE);
 
     $fields['langcode'] = BaseFieldDefinition::create('language')
-      ->setLabel(t('Language code'))
-      ->setDescription(t('The comment language code.'));
+      ->setLabel(t('Language'))
+      ->setDescription(t('The comment language code.'))
+      ->setDisplayOptions('form', array(
+        'type' => 'language_select',
+        'weight' => 2,
+      ));
 
     $fields['name'] = BaseFieldDefinition::create('string')
       ->setLabel(t("The sender's name"))
diff --git a/core/modules/contact/src/MessageForm.php b/core/modules/contact/src/MessageForm.php
index 698fa8f..fbac8a3 100644
--- a/core/modules/contact/src/MessageForm.php
+++ b/core/modules/contact/src/MessageForm.php
@@ -98,15 +98,6 @@ public function form(array $form, FormStateInterface $form_state) {
       $form['preview']['message'] = $this->entityManager->getViewBuilder('contact_message')->view($message, 'full');
     }
 
-    $language_configuration = $this->moduleHandler->invoke('language', 'get_default_configuration', array('contact_message', $message->getContactForm()->id()));
-    $form['langcode'] = array(
-      '#title' => $this->t('Language'),
-      '#type' => 'language_select',
-      '#default_value' => $message->getUntranslated()->language()->id,
-      '#languages' => Language::STATE_ALL,
-      '#access' => isset($language_configuration['language_show']) && $language_configuration['language_show'],
-    );
-
     $form['name'] = array(
       '#type' => 'textfield',
       '#title' => $this->t('Your name'),
diff --git a/core/modules/language/language.module b/core/modules/language/language.module
index 40b9bfa..d6b3ae9 100644
--- a/core/modules/language/language.module
+++ b/core/modules/language/language.module
@@ -5,6 +5,8 @@
  * Add language handling functionality to Drupal.
  */
 
+use Drupal\Core\Entity\EntityTypeInterface;
+use Drupal\Core\Field\BaseFieldDefinition;
 use Drupal\Core\Form\FormStateInterface;
 use Drupal\Core\Language\LanguageInterface;
 use Drupal\Core\Routing\RouteMatchInterface;
@@ -170,6 +172,24 @@ function language_process_language_select($element) {
 }
 
 /**
+ * Implements hook_field_widget_info_alter().
+ */
+function language_field_widget_info_alter(array &$info) {
+  $info['language_select']['class'] = '\Drupal\language\Plugin\Field\FieldWidget\ConfigurableLanguageSelectWidget';
+}
+
+/**
+ * Implements hook_entity_base_field_info_alter().
+ */
+function language_entity_base_field_info_alter(&$fields) {
+  foreach ($fields as $definition) {
+    if ($definition instanceof BaseFieldDefinition && $definition->getType() == 'language' && ($options = $definition->getDisplayOptions('form')) && !empty($options['type'])) {
+      $definition->setDisplayConfigurable('form', TRUE);
+    }
+  }
+}
+
+/**
  * Implements hook_element_info().
  *
  * @todo Remove once https://www.drupal.org/node/2326409 is in.
diff --git a/core/modules/language/src/Plugin/Field/FieldWidget/ConfigurableLanguageSelectWidget.php b/core/modules/language/src/Plugin/Field/FieldWidget/ConfigurableLanguageSelectWidget.php
new file mode 100644
index 0000000..3d84a1a
--- /dev/null
+++ b/core/modules/language/src/Plugin/Field/FieldWidget/ConfigurableLanguageSelectWidget.php
@@ -0,0 +1,36 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\language\Plugin\Field\FieldWidget\ConfigurableLanguageSelectWidget.
+ */
+
+namespace Drupal\language\Plugin\Field\FieldWidget;
+
+use Drupal\Core\Field\FieldItemListInterface;
+use Drupal\Core\Field\Plugin\Field\FieldWidget\LanguageSelectWidget;
+use Drupal\Core\Form\FormStateInterface;
+
+/**
+ * Plugin implementation of the 'Language' widget.
+ *
+ * Actually this is not a plugin definition, this is set as an alternative
+ * widget class for the 'language_select' widget.
+ *
+ * @see \Drupal\Core\Field\Plugin\Field\FieldWidget\LanguageSelectWidget
+ */
+class ConfigurableLanguageSelectWidget extends LanguageSelectWidget {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function formElement(FieldItemListInterface $items, $delta, array $element, array &$form, FormStateInterface $form_state) {
+    $element = parent::formElement($items, $delta, $element, $form, $form_state);
+
+    $language_configuration = language_get_default_configuration($items->getFieldDefinition()->getTargetEntityTypeId(), $items->getEntity()->bundle());
+    $element['value']['#access'] = !empty($language_configuration['language_show']);
+
+    return $element;
+  }
+
+}
diff --git a/core/modules/menu_link_content/src/Entity/MenuLinkContent.php b/core/modules/menu_link_content/src/Entity/MenuLinkContent.php
index ec719c2..e2e3dcf 100644
--- a/core/modules/menu_link_content/src/Entity/MenuLinkContent.php
+++ b/core/modules/menu_link_content/src/Entity/MenuLinkContent.php
@@ -385,8 +385,12 @@ public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
       ));
 
     $fields['langcode'] = BaseFieldDefinition::create('language')
-      ->setLabel(t('Language code'))
-      ->setDescription(t('The node language code.'));
+      ->setLabel(t('Language'))
+      ->setDescription(t('The node language code.'))
+      ->setDisplayOptions('form', array(
+        'type' => 'language_select',
+        'weight' => 2,
+      ));
 
     $fields['parent'] = BaseFieldDefinition::create('string')
       ->setLabel(t('Parent plugin ID'))
diff --git a/core/modules/menu_link_content/src/Form/MenuLinkContentForm.php b/core/modules/menu_link_content/src/Form/MenuLinkContentForm.php
index 4fb93b2..ac3d98f 100644
--- a/core/modules/menu_link_content/src/Form/MenuLinkContentForm.php
+++ b/core/modules/menu_link_content/src/Form/MenuLinkContentForm.php
@@ -257,21 +257,6 @@ public function form(array $form, FormStateInterface $form_state) {
       '#weight' => -2,
     );
 
-    $language_configuration = $this->moduleHandler->invoke('language', 'get_default_configuration', array('menu_link_content', 'menu_link_content'));
-    if ($this->entity->isNew()) {
-      $default_language = isset($language_configuration['langcode']) ? $language_configuration['langcode'] : $this->languageManager->getDefaultLanguage()->getId();
-    }
-    else {
-      $default_language = $this->entity->getUntranslated()->language()->getId();
-    }
-    $form['langcode'] = array(
-      '#title' => t('Language'),
-      '#type' => 'language_select',
-      '#default_value' => $default_language,
-      '#languages' => Language::STATE_ALL,
-      '#access' => !empty($language_configuration['language_show']),
-    );
-
     $default = $this->entity->getMenuName() . ':' . $this->entity->getParentId();
     $form['menu_parent'] = $this->menuParentSelector->parentSelectElement($default, $this->entity->getPluginId());
     $form['menu_parent']['#weight'] = 10;
diff --git a/core/modules/node/src/Entity/Node.php b/core/modules/node/src/Entity/Node.php
index 10a9313..2e4e020 100644
--- a/core/modules/node/src/Entity/Node.php
+++ b/core/modules/node/src/Entity/Node.php
@@ -352,9 +352,8 @@ public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
       ->setRevisionable(TRUE)
       ->setDisplayOptions('form', array(
         'type' => 'language_select',
-        'weight' => 0,
-      ))
-      ->setDisplayConfigurable('form', TRUE);
+        'weight' => 2,
+      ));
 
     $fields['title'] = BaseFieldDefinition::create('string')
       ->setLabel(t('Title'))
diff --git a/core/modules/shortcut/src/Entity/Shortcut.php b/core/modules/shortcut/src/Entity/Shortcut.php
index 75d5b22..a4be0f5 100644
--- a/core/modules/shortcut/src/Entity/Shortcut.php
+++ b/core/modules/shortcut/src/Entity/Shortcut.php
@@ -213,8 +213,12 @@ public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
       ->setDescription(t('A serialized array of route parameters of this shortcut.'));
 
     $fields['langcode'] = BaseFieldDefinition::create('language')
-      ->setLabel(t('Language code'))
-      ->setDescription(t('The language code of the shortcut.'));
+      ->setLabel(t('Language'))
+      ->setDescription(t('The language code of the shortcut.'))
+      ->setDisplayOptions('form', array(
+        'type' => 'language_select',
+        'weight' => 2,
+      ));
 
     $fields['path'] = BaseFieldDefinition::create('string')
       ->setLabel(t('Path'))
diff --git a/core/modules/shortcut/src/ShortcutForm.php b/core/modules/shortcut/src/ShortcutForm.php
index c9f5d3d..ee53837 100644
--- a/core/modules/shortcut/src/ShortcutForm.php
+++ b/core/modules/shortcut/src/ShortcutForm.php
@@ -69,13 +69,6 @@ public function form(array $form, FormStateInterface $form_state) {
       '#default_value' => $this->entity->path->value,
     );
 
-    $form['langcode'] = array(
-      '#title' => t('Language'),
-      '#type' => 'language_select',
-      '#default_value' => $this->entity->getUntranslated()->language()->id,
-      '#languages' => LanguageInterface::STATE_ALL,
-    );
-
     return $form;
   }
 
diff --git a/core/modules/system/tests/modules/entity_test/src/Entity/EntityTest.php b/core/modules/system/tests/modules/entity_test/src/Entity/EntityTest.php
index b4cb26e..b80d221 100644
--- a/core/modules/system/tests/modules/entity_test/src/Entity/EntityTest.php
+++ b/core/modules/system/tests/modules/entity_test/src/Entity/EntityTest.php
@@ -76,8 +76,12 @@ public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
       ->setReadOnly(TRUE);
 
     $fields['langcode'] = BaseFieldDefinition::create('language')
-      ->setLabel(t('Language code'))
-      ->setDescription(t('The language code of the test entity.'));
+      ->setLabel(t('Language'))
+      ->setDescription(t('The language code of the test entity.'))
+      ->setDisplayOptions('form', array(
+        'type' => 'language_select',
+        'weight' => 2,
+      ));
 
     $fields['name'] = BaseFieldDefinition::create('string')
       ->setLabel(t('Name'))
diff --git a/core/modules/system/tests/modules/entity_test/src/EntityTestForm.php b/core/modules/system/tests/modules/entity_test/src/EntityTestForm.php
index 1db41d4..ec7c3e0 100644
--- a/core/modules/system/tests/modules/entity_test/src/EntityTestForm.php
+++ b/core/modules/system/tests/modules/entity_test/src/EntityTestForm.php
@@ -35,13 +35,6 @@ public function form(array $form, FormStateInterface $form_state) {
     $form = parent::form($form, $form_state);
     $entity = $this->entity;
 
-    $form['langcode'] = array(
-      '#title' => t('Language'),
-      '#type' => 'language_select',
-      '#default_value' => $entity->getUntranslated()->language()->id,
-      '#languages' => LanguageInterface::STATE_ALL,
-    );
-
     // @todo: Is there a better way to check if an entity type is revisionable?
     if ($entity->getEntityType()->hasKey('revision') && !$entity->isNew()) {
       $form['revision'] = array(
diff --git a/core/modules/taxonomy/src/Entity/Term.php b/core/modules/taxonomy/src/Entity/Term.php
index caebc53..047f5ad 100644
--- a/core/modules/taxonomy/src/Entity/Term.php
+++ b/core/modules/taxonomy/src/Entity/Term.php
@@ -118,8 +118,12 @@ public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
       ->setSetting('target_type', 'taxonomy_vocabulary');
 
     $fields['langcode'] = BaseFieldDefinition::create('language')
-      ->setLabel(t('Language code'))
-      ->setDescription(t('The term language code.'));
+      ->setLabel(t('Language'))
+      ->setDescription(t('The term language code.'))
+      ->setDisplayOptions('form', array(
+        'type' => 'language_select',
+        'weight' => 2,
+      ));
 
     $fields['name'] = BaseFieldDefinition::create('string')
       ->setLabel(t('Name'))
diff --git a/core/modules/taxonomy/src/TermForm.php b/core/modules/taxonomy/src/TermForm.php
index 65f1cfd..8cee383 100644
--- a/core/modules/taxonomy/src/TermForm.php
+++ b/core/modules/taxonomy/src/TermForm.php
@@ -28,15 +28,6 @@ public function form(array $form, FormStateInterface $form_state) {
     $form_state->set(['taxonomy', 'parent'], $parent);
     $form_state->set(['taxonomy', 'vocabulary'], $vocabulary);
 
-    $language_configuration = $this->moduleHandler->moduleExists('language') ? language_get_default_configuration('taxonomy_term', $vocabulary->id()) : FALSE;
-    $form['langcode'] = array(
-      '#type' => 'language_select',
-      '#title' => $this->t('Language'),
-      '#languages' => LanguageInterface::STATE_ALL,
-      '#default_value' => $term->getUntranslated()->language()->id,
-      '#access' => !empty($language_configuration['language_show']),
-    );
-
     $form['relations'] = array(
       '#type' => 'details',
       '#title' => $this->t('Relations'),