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.
one of a breed of domestic pigeons having an owllike appearance.
See
a person of owllike solemnity or appearance.
—adj.
operating late at night or all night: an owl train.