Finger joint (7)
I believe the answer is:
knuckle
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">finger joint</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for knuckle that I've seen before include "Bone of the fist" , "Part of the finger" , "Pork joint from the knee downwards" , "Knob at finger joint" , "Joint (of veal or pork?)" .)