A black widow spider (along with most other spiders) will kill her mate, so a woman who kills her husbands is called a black widow.
black widow
The Black Widow spider will mate, and then eat her mate because they are stuck together.
The Black Widow Spider
Black Widow, I believe.
The black widow spider got its name because the female of the species is known to eat the male after mating, similar to the behavior of the black widow woman in certain cultures who are rumored to kill their spouses.
* A black widow is a spider * metaphorically speaking A blackwidow is a woman who kills her mate afterward. * A widow is a woman whose husband has died.
black widow
The name "Black Widow" comes from the spider killing their mate, plus they are black with a red or yellow hourglass.
They mate with female Black Widows, and since the male knows that mating with the Black Widow will ultimately lead to his death by cannibalism, the black widow technically commits suicide just for the Black Widow spider to live and pass on.
The Black Widow on Counterfeit Island is female. The name comes from the poisonous species of spider, in which the female spider kills the male when they mate. The name "black widow" is colloquially any woman or wife who kills one or more husbands or mates, especially for financial benefit.
Black widow for sure, and I believe there are a few other species.