Ankle-length dress (4)
I believe the answer is:
maxi
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">ankle-length dress</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for maxi that I've seen before include "racing yacht" , "Long length skirt" , "full length garment" , "Ankle-length skirt" , "Full-length skirt" .)