clover deuce-ace leash set of three shamrock tercet tern ternal ternate ternion terzetto three three-ply threefold threesome tierce treble trefoil trey triad trialogue triangle tricorn trident triennium trihedron trilogic trilogy trimester trinal trine trinity trinomial trio triphthong triple triple crown triple threat triplet triplex triplicate triplopy tripod triptych trireme triseme triskelion trisul triumvirate triunity trivet troika