Webster's Revised Unabridged Dictionary · 1913

Eighth

Eighth (ātth) , adjective

[Anglo-Saxon eahtoea.]

1.
Next in order after the seventh.
2.
Consisting of one of eight equal divisions of a thing.
Collocations (1)
Eighth note (Music) , the eighth part of a whole note, or semibreve; a quaver.

Eighth , noun

1.
The quotient of a unit divided by eight; one of eight equal parts; an eighth part.
2.
(Music) The interval of an octave.