Kit; clothes (6)
I believe the answer is:
outfit
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">kit</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >'<span class="explanation-format__original">clothes</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(outfit is a kind of clothes)</span><br/ ><br/ ></span>
(Other definitions for outfit that I've seen before include "gear" , "Costume" , "Complete set of clothes" , "Business" , "Equip for an enterprise" .)