Shatter a big hit (5)
I believe the answer is:
smash
I believe this is a double definition.
'shatter' is the first definition.
(I've seen this in another clue)
'a big hit' is the second definition.
(I've seen this in another clue)
(Other definitions for smash that I've seen before include "Violently break into pieces" , "Destroy violently" , "Completely destroy" , "Overhead tennis shot" , "Shatter, break up" .)