Trey
来自Big Physics
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late Middle English: from Old French trei ‘three’, from Latin tres .
wiktionary
From Middle English treye, from Anglo-Norman trei or treis, from Old French treis(“three”). Doublet of three.
etymonline
trey (n.)
late 14c., "card, die, or domino with three spots," from Anglo-French, Old French treis (Modern French trois), oblique case of treie "three," from Latin tria (neuter) "three" (see three). In slang use for "three (of anything)" from 1887.
