noun
a ratite bird order: ostriches and related extinct birds; known from the Pleistocene onward
• Syn: ↑Struthioniformes
• Hypernyms: ↑animal order
• Member Holonyms: ↑Aves, ↑class Aves
• Member Meronyms: ↑Struthionidae, ↑family Struthionidae
Useful english dictionary. 2012.