black widow

noun3

1. •
   Any of several species of venomous and potentially deadly spiders, particularly Latrodectus spp.

   • Looking out at the gloomy silent withered forests, Bond thought that nothing could be living in them except bats and scorpions, horned toads and black widow spiders. — 1954
2. •
   A woman who kills one or more of her lovers.
3. •
   A female suicide bomber, sometimes one intending to avenge her husband who was killed.