Gristle (9)
I believe the answer is:
cartilage
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">gristle</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for cartilage that I've seen before include "bodily tissue" , "Gristle" , "Connective tissue in joints" , "Tough white flexible tissue attached to bones" .)