Hide damaged sink (4)
I believe the answer is:
skin
'hide' is the definition.
(a hide is an animal skin)
'damaged sink' is the wordplay.
'damaged' indicates an anagram.
'sink' anagrammed gives 'SKIN'.
(Other definitions for skin that I've seen before include "Outer surface" , "Swindle" , "Peel; drum head" , "Outer layer of a fruit or vegetable" , "Outer layer of, eg, apple" .)