A protective garment; pinafore (5)
I believe the answer is:
apron
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">a protective garment</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(apron is a kind of protective garment)</span><br/ ><br/ >'<span class="explanation-format__original">pinafore</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ ></span>
(Other definitions for apron that I've seen before include "Protective garment worn at front" , "something befitting kitchen-sink drama?" , "Kitchen garment or airfield surface." , "Garment traditionally worn by mother" , "Area around aircraft hangar" .)