Noun | 1. | ![]() animal order - the order of animals Aves, class Aves - (ornithology) the class of birds bird of Minerva, bird of night, owl, hooter - nocturnal bird of prey with hawk-like beak and claws and large head with front-facing eyes family Strigidae, Strigidae - a family of nocturnal birds of the order Strigiformes family Tytonidae, Tytonidae - comprising only the barn owls |