Finger feature (4)
I believe the answer is:
nail
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">finger feature</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 nail that I've seen before include "It needs a hammer (or a file?)" , "Metal spike with head" , "Hits this in the head to be bang-on" , "Carpentry fastener" , "Secure" .)