Comedian's foil (6)
I believe the answer is:
stooge
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">comedian's foil</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 stooge that I've seen before include "Butt of a comic's jokes" , "Comedian's assistant-victim" , "lackey" , "A comedian's assistant, butt of his jokes" , "comedy partner" .)