1. (n.) The eighth tone in the scale; the interval between one and eight of the scale\, or any interval of equal length; an interval of five tones and two semitones.

2. (n.) The eighth day after a church festival, the festival day being included; also, the week following a church festival.

3. (n.) The whole diatonic scale itself.

4. (n.) The first two stanzas of a sonnet, consisting of four verses each; a stanza of eight lines.

5. (n.) A small cask of wine, the eighth part of a pipe.

6. (a.) Consisting of eight; eight.

English horn Octateuch Spenserian stanza antistrophe bassoon block flute bombard book bourdon burden canto cello chorus claribel clarinet clarion concert flute consecutive intervals contraoctave cornet cornopean couplet cromorna cymbel degree diapason diatessaron diatonic interval diatonic semitone distich double contraoctave dulciana eight eighter from Decatur eighth enharmonic diesis enharmonic interval envoi epode fifth flute stop foundation stop four-foot octave four-line octave fourniture fourth gamba gedeckt gemshorn great octave half step halftone harmonic flute heptastich hexastich hybrid stop interval koppel flute larigot less semitone line measure melodia melodic interval mixture monostich mutation stop nazard note oboe octad octagon octahedron octameter octastich octastyle octavo octet octonary octosyllable ogdoad one-line octave organ stop ottava ottava alta ottava bassa ottava rima parallel octaves pentastich piccolo plein jeu posaune principal quatrain quint quintaten rank ranket reed stop refrain register rhyme royal rohr flute second semitone septet sesquialtera sestet seventh sextet shawm sixth small octave spitz flute stanza stave step stop stopped diapason stopped flute strain string diapason string stop strophe subcontraoctave syllable tercet terza rima tetrastich third tierce tone tone row tremolo triplet tristich trombone trumpet twelfth two-foot octave two-line octave unda maris unison interval utas verse vibrato viola voix celeste vox angelica vox humana whole step