'cockatiel' definitions:

Definition of 'cockatiel'

From: WordNet
noun
Small grey Australian parrot with a yellow crested head [syn: cockateel, cockatiel, cockatoo parrot, Nymphicus hollandicus]

Definition of 'cockatiel'

From: GCIDE
  • cockatiel \cock"a*tiel\, Cockateel \Cock"a*teel\, n. (Zool.) A small gray and white Australian parrot ({Leptolophus hollandicus}, formerly Calopsitta Nov[ae]-Hollandi[ae]) with a prominent crest; the male has bright yellow cheeks and crest, but the female has only a pale yellow in the face; -- it is so called from its note.
  • Syn: cockateel, cockatoo parrot, Nymphicus hollandicus. [1913 Webster + WordNet 1.5]