Noah Webster's Dictionary 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.

Multi-Version Concordance Octave (3 Occurrences) 1 Chronicles 15:21 And Mattithiah and Eliphelehu and Mikneiah and Obed-edom and Jeiel and Azaziah, with corded instruments on the octave, to give the first note of the song. (BBE YLT) Psalms 6:1 To the Overseer with stringed instruments, on the octave. -- A Psalm of David. O Jehovah, in Thine anger reprove me not, Nor in Thy fury chastise me. (YLT) Psalms 12:1 To the Overseer, on the octave. -- A Psalm of David. Save, Jehovah, for the saintly hath failed, For the stedfast have ceased From the sons of men: (YLT)