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.
The horn in a motor vehicle.
A penis.
A person who hoots.
A nose, especially a large one.
A large cannabis cigarette.
An imaginary creature with serrated horns, somewhat similar to the heraldic antelope.
A type of wild mountain goat of the genus Capra, such as the species Capra ibex.