Cock·a·too n.  Zool. A bird of the Parrot family, of the subfamily Cacatuinæ, having a short, strong, and much curved beak, and the head ornamented with a crest, which can be raised or depressed at will. There are several genera and many species; as the broad-crested cockatoo (Plictolophus cristatus or  Cacatua cristatus), the sulphur-crested (Cacatua galerita or Plictolophus galeritus), etc. The palm cockatoo or great black cockatoo of Australia is Probosciger aterrimus (formerly Microglossus aterrimus).
 ◄ ►
 Cacatua galerita
      n : white cockatoo with a yellow erectile crest [syn: sulphur-crested
          cockatoo, Kakatoe galerita]