Sleeveless top or underwear (4)
I believe the answer is:
vest
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">sleeveless top</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(a vest is a garment without sleeves)</span><br/ ><br/ >'<span class="explanation-format__original">underwear</span>' is the second definition.<br/ ><br/ ></span>
(Other definitions for vest that I've seen before include "Clothe in ecclesiastical garments" , "Undergarment for upper body" , "Undershirt, singlet" , "Undergarment covering trunk of body" , "American version of waistcoat" .)