A breast, especially a woman's breast.
Used other than figuratively or idiomatically: see dirty, pillow.
A woman's breast.
An owl.
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.
The horn in a motor vehicle.
A penis.
A person who hoots.
A nose, especially a large one.
A large cannabis cigarette.