cockatrice

noun5

1. •
   A monster with a lethal gaze or breath, originally believed to originate from a cock egg brooded over by a snake or toad, later specifically combining serpentine and landfowl features and particularly (heraldry) a rooster-headed wyvern.
2. •
   (no longer used) Synonym of basilisk, a serpentine dragon so poisonous that even its gaze is deadly.
3. •
   (disapproving, no longer used) An evil, deceitful, or destructive person.

   • ... this little cockatrice of a king ... — 1622
4. •
   (offensive, no longer used) Synonym of whore, a female prostitute, a sexually promiscuous woman.
5. •
   (no longer used) Synonym of crocodile.