maneater

Noun

man-eater (plural man-eaters)

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, Thomas Boston, The Human Nature in its Fourfold State, page 336
2. A carnivorous plant large enough to consume a human; a man-eating plant.
3. A cannibal; a human that eats other humans.
   • For how a race of Man-eaters should spring up in these islands, when none of the nations on the continents from whence they must derive their original are charged with these savage customs, is not easy to conceive[.]1724, Thomas Salmon, Modern History, Or, The Present State of All Nations, page 287
4. (broadly, slang) 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, Norman Lindsay, The Cousin from Fiji, page 233

   Synonyms:

   femme fatale, enchantress, mantrap, seductress, she-wolf, siren, temptress, vamp, vixen, wolfess