n. A tube; pipe.n. A musical wind-instrument; a trumpet: as, the trump of doom; the last trump (the summons to final judgment).n. A trumpeter; a herald. See trumpet, 3.n. A jews'-harp.To blow a trumpet.To impose upon; dupe; deceive; gull.To obtrude or impose unfairly.n. One card of that suit which for the time being outranks the other suits, and which is generally determined by turning up the last card in dealing, but in some games by choice or otherwise; also, the suit which thus outranks the others (a loose use, for the plural trumps).n. An old game at cards, also called ruff (see ruff), the original of the modern game of whist. See triumph, 7.n. A person upon whom one can depend; one who spontaneously does the right thing in any emergency; a good fellow.To put a trump-card upon; take with a trump.In card-playing, to play a trumpcard when another suit has been led.