2. (Mus.)
(a) 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.
(b) The whole diatonic scale itself.
Note: The ratio of a musical tone to its octave above is 1:2
as regards the number of vibrations producing the
tones.
3. (Poet.) The first two stanzas of a sonnet, consisting of
four verses each; a stanza of eight lines.
With mournful melody it continued this octave. --Sir
P. Sidney.
{Double octave}. (Mus.) See under {Double}.
{Octave flute} (Mus.), a small flute, the tones of which
range an octave higher than those of the German or
ordinary flute; -- called also {piccolo}. See {Piccolo}.
4. A small cask of wine, the eighth part of a pipe.
2. (Mus.) A small upright piano.
3. (Mus.) An organ stop, with a high, piercing tone.