terzetto (
http://definr.com/terzetto)
n : the cardinal number that is the sum of one and one and one
[syn:
three,
3,
III,
trio,
threesome,
tierce,
leash,
troika,
triad,
trine,
trinity,
ternary,
ternion,
triplet,
tercet,
trey,
deuce-ace]