Part of a jacket (5)
I believe the answer is:
lapel
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">part of a jacket</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for lapel that I've seen before include "Revere on a coat" , "top of coat" , "Folded-back part of coat" , "Feature of a jacket" , "Jacket fold" .)