rhea
rhea \'re--*\ n [NL, genus of birds, prob. fr. L Rhea, mother of Zeus, fr. Gk] : any of several large tall flightless So. American birds (order Rheiforme s) that resemble but are smaller than the African ostrich, have three toes, a fully feathered head and neck, an undeveloped tail, and pale gray to brownish feathers that droop over the rump and back