(of a bicycle) Having twelve gears.

plural of twelve-speed

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

(nautical) Having twelve masts.

Alternative spelling of twelve-stepper

(Canada, Philippines) Twelfth grade.

(In both the 12-hour clock and the 24-hour clock) The start of the thirteenth hour of the day; noon (noontime); 12:00 p.m. (12:00).

The number 1200 one thousand two hundred / The year 1200.

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