<dt><i class="icon-<%= icon %>"></i><%= title %></dt>
<dd><%= content %> </dd>

var Definitions = Backbone.View.extend({
  tagName: 'dl',

  initialize: function () {
    this.collection.on('change', this.render, this);
  }

  render: function () {
    this.$el.html( <output from template that loops over all definitions> );
  }
});