Business wear (4)
I believe the answer is:
suit
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">business wear</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for suit that I've seen before include "Legal action - courtship" , "Formal clothing" , "Quarter of a full deck" , "See 1" , "diamonds, perhaps" .)