Mastermind game piece (3)
I believe the answer is:
peg
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">mastermind game piece</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for peg that I've seen before include "Fix (a price)" , "Hook" , "This leg is artificial" , "The woman" , "The girl to hold a hat" .)