Prong of a fork (4)
I believe the answer is:
tine
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">prong of a fork</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 tine that I've seen before include "Spike" , "Slender prong of fork" , "(Fork's) prong" .)