[trump] n [ME trompe, fr. OF, of Gmc origin; akin to OHG trumba, trumpa trumpet] (14c) 1 a: trumpet b chiefly Scot: jew's harp
2: a sound of or as if of trumpeting "the ~ of doom"
[2]trump n [alter. of [1]triumph] (1529) 1 a: a card of a suit any of whose cards will win over a card that is not of this suit b: the suit whose cards are trumps for a particular hand--often used in pl.
2: a decisive overriding factor or final resource
3: a dependable and exemplary person [3]trump vt (1586) 1: to get the better of: outdo
2: to play a trump on (a card or trick) when another suit was led ~ vi: to play a trump when another suit was led