A brass instrument resembling a cornet but with a wider, conical bore, and usually with three valves, in the same B-flat pitch as many trumpets and cornets but with a more deeply conical mouthpiece than those. A bugle with valves.
The horn in a motor vehicle.
An owl.
A woman's breast.
A siren or steam whistle, especially one in a factory and used to indicate the beginning or the end of a working day or shift.
A penis.
A person who hoots.
A nose, especially a large one.
A large cannabis cigarette.