A leg of lamb or mutton (5)
I believe the answer is:
gigot
<span class="explanation-format__ClueExplanation">I believe this is a double definition.<br/ ><br/ >'<span class="explanation-format__original">a leg of lamb</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >'<span class="explanation-format__original">mutton</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ ></span>
(Other definitions for gigot that I've seen before include "A bit of mutton" , "Mutton or lamb leg" , "Perceive by touch" , "joint of meat" .)