Pronunciation: (ē'ō),[key] —n., —pl.i•os. a small hawk, Buteo solitarius, having two plumage phases and occurring only on the island of Hawaii, where it is a rare species and the only living indigenous bird of prey. Also called Hawaiian hawk.
Pronunciation: (ī'ō, ē'ō),[key] —n. 1. Class. Myth.a woman who, being loved by Zeus, was transformed into a white heifer and was, at the wish of Hera, first guarded by Argus and later pursued through the world by a gadfly until she reached Egypt, where she resumed her true shape: identified by the Egyptians with Isis.
2. Astron.a large volcanically active moon of the planet Jupiter.