Crotch (5)
I believe the answer is:
groin
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">crotch</span>' is the definition.<br/ ><span class="explanation-format__explanation">(thesaurus)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for groin that I've seen before include "private parts" , "Fold between belly and thigh" , "On rig (anag.)" .)