noun

1. The suit, in a game of cards, that outranks all others.

   “Diamonds were declared trump(s).”

2. A playing card of that suit.

   “He played an even higher trump.”

3. Something that gives one an advantage, especially one held in reserve.

verb

1. To play on (a card of another suit) with a trump.

   “He knew the hand was lost when his ace was trumped.”

2. To play a trump, or to take a trick with a trump.

3. To get the better of, or finesse, a competitor.

Synonyms: outsmart, ruff