I'm not sure if the context of a <dl> applies to a list of terms and definitions for a single subject, or a single word and its' aliases.

Which one should I use ?

Code:
<dl>
	<dt></dt>
	<dd></dd>
	
	<dt></dt>
	<dt></dt>
	<dd></dd>
</dl>
Code:
<dl>
	<dt></dt>
	<dd></dd>
</dl>

<dl>
	<dt></dt>
	<dt></dt>
	<dd></dd>
</dl>