man-eater

noun4

1. •
   An animal that attacks and kills humans for food, such as certain tigers or sharks; any animal that consumes human flesh.

   • And particularly, he knows where to find the primitive substance of the man eater: howsoever evaporate or reduced, as it were, into air or vapour, by sweat or perspiration. — 1776
2. •
   A carnivorous plant large enough to consume a human; a man-eating plant.
3. •
   A cannibal; a human that eats other humans.

   • A stout ferocious-looking fellow, with muscular bandy legs, came in as I was conversing on the subject of cannibalism, and was pointed out to me as a celebrated marksman and man eater. — 1827
4. •
   (slang, disapproving) A seductive dangerous woman, often readily taking and discarding male romantic partners.

   • "That only proves she has affairs with them too. She's a man-eater." — 1945