Twelfth

Part of speech: noun (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. An interval comprising an octave and a fifth.

Part of speech: adjective (a.)

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.