1. (n.) A collection or combination of three of a kind; three united.

2. (n.) Three verses rhyming together.

3. (n.) A group of three notes sung or played in the tree of two.

4. (n.) Three children or offspring born at one birth.

Spenserian stanza accidental andante tempo antistrophe beat book breve burden canto chorus clover compound time couplet crotchet demisemiquaver deuce-ace distich dominant dominant note double whole note duple time eighth note enharmonic enharmonic note envoi epode flat half note hemidemisemiquaver heptastich hexastich largo leash line march tempo measure minim mixed times monostich musical note natural note octastich octave octet ottava rima patent note pentastich presto quarter note quatrain quaver rag ragtime refrain report responding note rhyme royal rubato semibreve semiquaver septet sestet set of three sextet sextuple time shamrock shaped note sharp simple time sixteenth note sixty-fourth note spiccato staccato stanza stave strain strophe sustained note syllable syncopation syncope tempo tempo rubato tercet ternary ternion terza rima terzetto tetrastich thirty-second note three three-quarter time threesome tierce time time pattern timing tone trefoil trey triad trialogue triangle tricorn trident triennium trihedron trilogy trimester trine trinity trinomial trio triphthong triple crown triple threat triple time triplopy tripod triptych trireme triseme triskelion tristich trisul triumvirate triunity trivet troika two-four time verse waltz time whole note