Some crushed in stampede (4)
I believe the answer is:
rush
'stampede' is the definition.
(thesaurus)
'some crushed in' is the wordplay.
'some' says the answer is hidden in the clue (some of the parts of the word are used).
'RUSH' can be found hidden inside 'crushed in'.
(Other definitions for rush that I've seen before include "Deal with (something) hurriedly" , "Burn rubber" , "Be too hasty or too fast" , "plant developing on shore" , "Hurry to the river grass" .)