Part of a grape (4)
I believe the answer is:
peel
(Other definitions for peel that I've seen before include "old tower" , "See 4 and 22" , "Old PM" , "Flake" , "A PM; a fortified tower" .)
I believe the answer is:
peel
(Other definitions for peel that I've seen before include "old tower" , "See 4 and 22" , "Old PM" , "Flake" , "A PM; a fortified tower" .)