the cardinal number that is the sum of one and one and one
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one of four playing cards in a deck having three pips
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Trey \Trey\, n. [OF. treis three, F. trois, L. tres. See {Three}, and cf. {Tray-trip}.] Three, at cards, dice, or dominoes; a card, die, or domino of three spots or pips.
Seven is my chance and thine is cinq and trey. --Chaucer.