<dl> tag defines a description list.
<dl> tag is used in conjunction with <dt> (defines description terms) and <dd> (describes description data).
Eg:
<dl>
<dt>Coffee</dt>
<dd>Black hot drink</dd>
<dt>Milk</dt>
<dd>White cold drink</dd>
</dl>
Eg2: multiple terms and multiple descriptions. Useful when defining a few words which share a multiple common meanings.
<dl>
<dt>Garbage</dt>
<dt>Rubbish</dt>
<dd>Waste material that is disposed of.</dd>
<dd>Television shown during the daytime, "Daytime TV".</dd>
</dl>