Pronunciation: (oul), [key]
1. any of numerous, chiefly nocturnal birds of prey, of the order Strigiformes, having a broad head with large, forward-directed eyes that are usually surrounded by disks of modified feathers: many populations are diminishing owing to loss of habitat.
2. one of a breed of domestic pigeons having an owllike appearance.
3. See night owl.
4. a person of owllike solemnity or appearance.
operating late at night or all night: an owl train.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.