What does "cockatoo" mean?

Cockatoo: A fabulous serpent whose breath and look were said to be fatal. See Basilisk. That bare vowel, I, shall poison more Than the death-darting eye of cockatrice. Shak.

Additional senses

  1. 2.(Her.) A representation of this serpent. It has the head, wings, and legs of a bird, and tail of a serpent.
  2. 3.(Script.) A venomous serpent which which cannot now be identified. The weaned child shall put his hand on the cockatrice's Note: [Rev. Ver. basilisk's] den. Is. xi.
  3. 4.4. Any venomous or deadly thing. This little cockatrice of a king. Bacon.

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