·noun The next in order after the eleventh.
II. Twelfth ·noun An interval comprising an octave and a fifth.
III. Twelfth ·adj Consisting, or being one of, twelve equal parts into which anything is divided.
IV. Twelfth ·noun The quotient of a unit divided by twelve; one of twelve equal parts of one whole.
V. Twelfth ·adj Next in order after the eleventh; coming after eleven others;
— the ordinal of twelve.