What is 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 called?

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. (Webster's 1913.)

Sources