Bridge player's feat (4)
I believe the answer is:
slam
'bridge player's feat' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for slam that I've seen before include "Shut loudly and forcibly" , "what needs a lot of tricks to succeed" , "ambitious bid" , "Taking of twelve or thirteen tricks (bridge)" , "If it's grand, it wins all 13 tricks in bridge game" .)