Wrinkly fruit (4)
I believe the answer is:
ugli
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">wrinkly fruit</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 ugli that I've seen before include "Hybrid of tangerine and grapefruit" , "Mottled tangelo hybrid" , "Tangerine-grapefruit hybrid" , "Unappealing-sounding fruit?" , "Trademark name for a hybrid citrus fruit" .)