1) Deuce-ace 2) Digit 3) Figure 4) Leash 5) Tercet 6) Ternary 7) Terzetto 8) The number three 9) Three 10) Threesome 11) Tierce 12) Trey 13) Triad 14) Trine 15) Trinity 16) Trio 17) Triplet 18) Troika 1) Tercet 2) Terzetto 3) Threesome 4) Trey 5) Triad 6) Trine 7) Trinity 8) Trio 9) Triplet 
• (a.) The number three; three things together; a ternary.
Ter'ni·on noun [ Latin ternio , from terni three each. See Tern , adjective ] The number three; three things together; a ternary. Bp. Hall.