three (noun, adjective, synonyms)

The noun three has one meaning:

Meaning #1: the cardinal number that is the sum of one and one and one
  Synonyms: 3, III, trio, threesome, tierce, leash, troika, triad, trine, trinity, ternary, ternion, triplet, tercet, terzetto, trey, deuce-ace

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The adjective three has one meaning:

Meaning #1: being one more than two
  Synonyms: 3, iii