Large part of skeleton (6)
I believe the answer is:
pelvis
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">large part of skeleton</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 pelvis that I've seen before include "Large part of skeleton" , "Large bony frame" , "Bony structure at the base of the spine" , "Hip structure" , "It supports the lower limbs" .)