Grease, room or patch? (5)

I believe the answer is:
elbow
(Other definitions for elbow that I've seen before include "Sharp bend in a road or river" , "sack?" , "given to one about to leave" , "Reject" , "push" .)
I believe the answer is:
elbow
(Other definitions for elbow that I've seen before include "Sharp bend in a road or river" , "sack?" , "given to one about to leave" , "Reject" , "push" .)