Animal skin (4)
I believe the answer is:
pelt
'animal skin' is the definition.
(I know that pelt is a type of animal skin)
This is the entire clue.
(Other definitions for pelt that I've seen before include "Animal skin with hair still on it" , "Subject to bombardment" , "fall heavily" , "Skin - bombard - hurry!" , "Rain cats and dogs" .)