Body part in crate (5)
I believe the answer is:
chest
This clue is a double definition.
'body part' is the first definition.
(I know that chest is a type of body part)
'crate' is the second definition.
(both can mean a large container)
'in' is the link.
(Other definitions for chest that I've seen before include "Large, sturdy box with a lid" , "drawers in it!" , "Large box used for storage" , "Breast - case" , "It's enclosed by the ribs" .)