From WordNet (r) 3.0 (2006):
three adj 1: being one more than two [syn: three, 3, iii] n 1: the cardinal number that is the sum of one and one and one [syn: three, 3, III, trio, threesome, tierce, leash, troika, triad, trine, trinity, ternary, ternion, triplet, tercet, terzetto, trey, deuce- ace] 2: one of four playing cards in a deck having three pips [syn: trey, three]