Pocket to hold a watch (3)
I believe the answer is:
fob
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">pocket to hold a watch</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 fob that I've seen before include "Waistcoat pocket" , "Kind of watch on a chain" , "Key-ring tab" , "Chain attached to watch" , "Kind of watch carried in pocket" .)