Body part; case (5)
I believe the answer is:
chest
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">body part</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I know that chest is a type of body part)</span><br/ ><br/ >'<span class="explanation-format__original">case</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I know that chest is a type of case)</span><br/ ><br/ ></span>
(Other definitions for chest that I've seen before include "Piece of furniture" , "Large strong box for storage" , "Trunk or crate" , "Upper trunk" , "Part of body; storage box" .)