Synonyms and related words :
clover, deuce-ace, leash, set of three, shamrock, tercet, ternary, ternion, terzetto, three, threesome, tierce, trefoil, trey, triad, trialogue, triangle, tricorn, trident, triennium, trihedron, trimester, trine, trinity, trinomial, trio, triphthong, triple crown, triple threat, triplet, triplopy, tripod, triptych, trireme, triseme, triskelion, trisul, triumvirate, triunity, trivet, troika