tercet Meaning, Definition & Usage

  1. noun the cardinal number that is the sum of one and one and one
    deuce-ace; trio; triplet; tierce; troika; three; trey; 3; ternion; trine; ternary; triad; threesome; leash; III; trinity; terzetto.

WordNet

Ter"cet noun
Etymology
F., fr. It. terzetto, dim. of terzo, third, L. tertius. See Tierce, and cf. Terzetto.
Definitions
  1. (Mus.) A triplet. Hiles.
  2. (Poetry) A triplet; a group of three lines.

Webster 1913