Hit stuff (7)
I believe the answer is:
clobber
This clue is a double definition.
'hit' is the first definition.
(I've seen this before)
'stuff' is the second definition.
(I know that stuff can be written as clobber)
(Other definitions for clobber that I've seen before include "Clothes and accessories" , "Repeatedly hit" , "Whitewash" , "Things people wear" , "what one barely lacks" .)