noun
a family of birds coextensive with the order Rheiformes
• Syn: ↑Rheidae
• Hypernyms: ↑bird family
• Member Holonyms: ↑Rheiformes, ↑order Rheiformes
• Member Meronyms: ↑genus Rhea, ↑Pterocnemia, ↑genus Pterocnemia
Useful english dictionary. 2012.