Two dozen (6-4)
I believe the answer is:
twenty-four
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">two dozen</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for twenty-four that I've seen before include "Number of hours in a day" , "Two dozen" .)