Femur (9)
I believe the answer is:
thighbone
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">femur</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for thighbone that I've seen before include "The informal femur" , "Section of frame" .)