Definitions of rhea:

• noun:   larger of two tall fast-running flightless birds similar to ostriches but three-toed; found from Brazil to Patagonia
• noun:   smaller of two tall fast-running flightless birds similar to ostriches but three-toed; found from Peru to Strait of Magellan
• noun:   fertility goddess in ancient Greek mythology; wife of Cronus and mother of Zeus; identified with Roman Ops and Cybele of ancient Asia Minor
• name:  A female given name (rare: 1 in 11111 females; popularity rank in the U.S.: #960)
• name:  A surname (rare: 1 in 25000 families; popularity rank in the U.S.: #3277)