a card of a suit any of whose cards will win over a card that is not of this suit. the suit whose cards are trumps for a particular hand —often used in plural. a decisive overriding factor or final resource. a dependable and exemplary person. to get the better of: OVERRIDE. to play a trump on (a card or trick) when another suit was led. to play a trump when another suit was led. TRUMPET. JEW'S HARP. a sound of or as if of trumpeting. Donald J(ohn) 1946– American businessman and politician; 45th president of the U.S. (2017–21).