Complaint from Crabbe effective (4)
I believe the answer is:
beef
'complaint' is the definition.
(beef can mean a complaint or objection)
'from crabbe effective' is the wordplay.
'from' indicates the answer is hidden within the clue.
'BEEF' is hidden within 'crabbe effective'.
(Other definitions for beef that I've seen before include "Meat of the cow" , "Complain; meat" , "nickname of US State" , "Argument" , "joint, perhaps" .)