Entry 3 senses · 2 variants Webster, 1913 Three /(thrē)/ · IPA /θɹiː/ a. n. 01 a. One more than two; two and one. 1. One more than two; two and one. “Three solemn aisles approach the shrine.” — Keble. 02 n. The number greater by a unit than two; three units or objects. 1. The number greater by a unit than two; three units or objects. 2. A symbol representing three units, as 3 or iii. Phrases & compounds Rule of three — See under Rule, n.