An owl of the species Tyto alba, often having a white face and commonly found in barns and other farm buildings.
An owl (order Strigiformes) that is nocturnal.
A musical instrument which imitates an owl's hoot, consisting of a receptacle partly filled with water and a mouthpiece that is blown into.
One who goes to bed late, or stays up late at night or in the early hours of the morning.