Some crushing charge (4)
I believe the answer is:
rush
'charge' is the definition.
(I know that charge can be written as rush)
'some crushing' is the wordplay.
'some' indicates a hidden word (some of the parts of the word are used).
'RUSH' is hidden within 'crushing'.
(Other definitions for rush that I've seen before include "something for basket" , "Deal with (something) hurriedly" , "Liverpool footballer once" , "Hurry, surge" , "Overcharge" .)