cockatrice

Meanings

1. A legendary creature about the size and shape of a dragon or wyvern, but in appearance resembling a giant rooster, with some lizard-like characteristics.
2. A mistress, a harlot.
3. A snake or serpent that appears to be hatched from a rooster, or cock's, egg.
4. The cobra.
5. Any venomous or deadly thing.

Etymology

First attested 1382 as Middle English cocatrice (“basilisk”), from Old French cocatriz, from Late Latin calcātrīx (“she who treads upon something”), from Latin calcō (“tread”), from calx (“heel, hoof”).