Patella or clavicle? (4)
I believe the answer is:
bone
This clue is a double definition.
'patella' is the first definition.
(thesaurus)
'clavicle?' is the second definition.
(clavicle is a kind of bone)
(Other definitions for bone that I've seen before include "Part of skeleton" , "Eg, rib" , "#Close to it is risque" , "Skeleton component" , "See 6" .)