A quick, brilliant, and highly successful act.
A coup d'état.
A takeover of one group by another.
A blow against an enemy delivered in a way that shows bravery.
A single roll of the wheel at roulette, or a deal in rouge et noir.
One of various named strategies employed by the declarer to win more tricks, such as the Bath coup.
To make a coup.
An accomplishment; particularly one that is flaunted or boasted of.
He thinks it is quite a feather in his cap that he figured it out for himself.
Used other than figuratively or idiomatically: see feather, cap.