Rhea

(noun) fertility goddess in ancient Greek mythology; wife of Cronus and mother of Zeus; identified with Roman Ops and Cybele of ancient Asia Minor.

(noun) smaller of two tall fast-running flightless birds similar to ostriches but three-toed; found from Peru to Strait of Magellan. Synonyms: rhea, nandu, Pterocnemia pennata.

(noun) larger of two tall fast-running flightless birds similar to ostriches but three-toed; found from Brazil to Patagonia. Synonyms: rhea, Rhea americana.