black widow


noun

a venomous spider, Latrodectus mactans, widely distributed in the U.S., the female of which is jet-black with an hourglass-shaped red mark on the underside of its abdomen.

Origin of black widow

First recorded in 1910–15

British Dictionary definitions for black widow

black widow

noun

an American spider, Latrodectus mactans, the female of which is black with red markings, highly venomous, and commonly eats its mate