Military fabric (5)
I believe the answer is:
khaki
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">military fabric</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 khaki that I've seen before include "Drably coloured" , "military material" , "Military uniform's cloth" , "Olive drab" , "Military fabric" .)