Twelfth (?), a. [For twelft, OE.
twelfte, AS. twelfta. See Twelve.] 1.
Next in order after the eleventh; coming after eleven others; -- the
ordinal of twelve.
2. Consisting, or being one of, twelve equal parts
into which anything is divided.
Twelfth, n. 1. The
quotient of a unit divided by twelve; one of twelve equal parts of one
whole.
2. The next in order after the eleventh.
3. (Mus.) An interval comprising an octave
and a fifth.