The Collaborative International Dictionary of English v.0.48:
Struthio \Stru"thi*o\, n.; pl. Struthiones. [L., an ostrich, fr. Gr. ?.] (Zool.) A genus of birds including the African ostriches. [1913 Webster]WordNet (r) 3.0 (2006):
Struthio n 1: type genus of the Struthionidae: African ostriches [syn: Struthio, genus Struthio]