Part of the hand (4)
I believe the answer is:
palm
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">part of the hand</span>' is the definition.<br/ ><span class="explanation-format__explanation">('palm' is part of 'hand')</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for palm that I've seen before include "Leaf in part of the hand?" , "Secretly snatch" , "Conceal magician" , "may need greasing" , "prize" .)