A person who is or has been a participant in a twelve-step program to recover from addiction.

A gramophone record of approximately 12 inches in diameter, having wider groove spacing and a shorter play time than a typical LP.

plural of twelve-inch

plural of twelve o'clock

plural of twelve-speed

(of a bicycle) Having twelve gears.

A bicycle having twelve gears.

(UK, slang, obsolete) A jury of twelve people.

(Canada, Philippines) Twelfth grade.

(nautical) Having twelve masts.