French military cap (4)
I believe the answer is:
kepi
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">french military cap</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 kepi that I've seen before include "Service cap" , "Flat-topped military cap" , "Military cap with circular top" , "French military headgear" , "French military hat" .)