The Collaborative International Dictionary of English v.0.48:
Dinornis \Di*nor"nis\, n. [NL., fr. Gr. ? terrible + ? bird.] (Paleon.) A genus of extinct, ostrichlike birds of gigantic size, which formerly inhabited New Zealand. See Moa. [Written also Deinornis.] DinosaurWordNet (r) 3.0 (2006):
Dinornis n 1: type genus of the Dinornithidae: large moas [syn: Dinornis, genus Dinornis]