diff --git a/core/includes/theme.inc b/core/includes/theme.inc
index 29bcec1..9b16bab 100644
--- a/core/includes/theme.inc
+++ b/core/includes/theme.inc
@@ -2201,7 +2201,7 @@ function _template_preprocess_item_list_item(&$item) {
  */
 function _template_preprocess_item_list_attributes(&$item) {
   if (is_array($item)) {
-    $attributes = array_diff_key($item, array('data' => 0, 'children' => 0, 'type' => 0));
+    $attributes = array_diff_key($item, array('data' => 0, 'children' => 0, 'type' => 0, 'dt' => 0, 'dd' => 0));
     // Attributes. (Always set).
     // @see http://drupal.org/node/1806066#comment-6577500
     $item['attributes'] = new Attribute(array());
diff --git a/core/themes/stark/templates/theme.inc/item-list.html.twig b/core/themes/stark/templates/theme.inc/item-list.html.twig
index cb41854..39c0976 100644
--- a/core/themes/stark/templates/theme.inc/item-list.html.twig
+++ b/core/themes/stark/templates/theme.inc/item-list.html.twig
@@ -10,9 +10,12 @@
  *   - children: A list of nested child items to render that behave
  *     identically to 'items', but any non-numeric string keys are treated as
  *     HTML attributes for the child list that wraps 'children'.
+ *   - dt: An array of terms for the item when it is in a definition list.
+ *   - dd: An array of definitions for the item when it is in a definition list.
  *   - attributes: The attributes applied to the list item.
+ *   - type: The type of list to return (e.g. "ul", "ol", or "dl").
  * - title: The title of the list.
- * - type: The type of list to return (e.g. "ul", "ol").
+ * - type: The type of list to return (e.g. "ul", "ol", or "dl").
  * - attributes: The attributes applied to the list element.
  *
  * @see template_preprocess
@@ -21,24 +24,53 @@
  * @ingroup themable
  */
 #}
+{# @todo: Rename this file to list.html.twig if this template handles all list types. #}
 {% if items %}
-<div class="item-list"> {# @TODO remove this wrapper div #}
+<div class="item-list"> {# @TODO remove this wrapper div or change class to 'html-list' #}
   {%- if title -%}
     <h3>{{ title }}</h3>
   {% endif %}
-  <{{ type }} class="{{ attributes.class }}" {{ attributes }}>
-  {% for item in items -%}
-    {% set value = item.data ? item.data : item %}
-    <li {{- item.attributes }}>{{- value -}}
-      {% if item.children %}
-        {%- include "core/themes/stark/templates/theme.inc/item-list.html.twig" with {
-          'items': item.children,
-          'title': item.title ? item.title : '',
-          'type': item.type ? item.type : type,
-          'attributes': item.attributes ? item.attributes : ''
-        } -%}
-      {% endif -%}
-    </li>
+  <{{ type }} {{ attributes }}>
+  {% for item in items %}
+
+    {#
+      Handle <li> and <dt>/<dd> items differently.
+      @todo: Handle this in _preprocess and use different templates
+             set via hook_template_suggestions_HOOK?
+    #}
+    {% if item.dt %}
+
+      {# Definition list items (<dt>/<dd>). #}
+      {# One or more <dt> can be followed by one or more <dd>. #}
+      {% for term in item.dt %}
+        <dt>{{ term }}</dt>
+      {% endfor %}
+      {% if item.dd %} {# <dd> are optional. #}
+        {% for definition in item.dd %}
+          {# @todo: Support <dd> attributes and children (nested lists, as below)?. #}
+          <dd>{{ definition }}</dd>
+        {% endfor %}
+      {% endif %}
+
+      {# Non-string list items (i.e. <li> with attributes or children). #}
+      {% elseif item.data is defined or item.children is defined %}
+        <li {{- item.attributes }}>{{- item.data -}}
+        {% if item.children %}
+          {%- include "core/themes/stark/templates/theme.inc/item-list.html.twig" with {
+            'items': item.children,
+            'title': item.title ? item.title : '',
+            'type': item.type ? item.type : type,
+            'attributes': item.attributes ? item.attributes : ''
+          } -%}
+        {% endif -%}
+        </li>
+
+      {# Simple string items. #}
+      {% else %}
+        <li> {{- item -}}</li>
+
+    {% endif %}
+
   {% endfor -%}
   </{{type}}>
 </div> {# @TODO remove this wrapper div #}