Cockatrice, a monster with the wings of a fowl, the tail of a dragon, and the head of a cock; alleged to have been hatched by a serpent from a cock's egg; its breath and its fatal look are in mediæval art the emblem of sin.
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Cockaigne * Cockburn, Sir Alexander