clover, deuce-ace, leash, set of three, shamrock, tercet, ternary, ternion, terzetto, three, threeness, threesome, tierce, trefoil, trey, triad, triality, trialogue, triangle, tricorn, trident, triennium, trihedron, trilogy, trimester, trine, trinomial, trio, triphthong, triple, triple crown, triple threat, tripleness, triplet, triplicity, triplopy, tripod, triptych, trireme, triseme, triskelion, trisul, triumvirate, triune, triunity, trivet, troika