A fabulous serpent, or dragon. The ancients alleged that its hissing would drive away all other serpents, and that its breath, and even its look, was fatal. See Cockatrice.
- A legendary serpent or dragon with lethal breath and glance.
- Any of various tropical American lizards of the genus Basiliscus, characterized by a crest on the head, back, and tail and the ability to run on the hind legs.