n.venomous New World spider; the female is black with an hourglass-shaped red mark on the underside of the abdomen
同义词：Latrodectus mactans
black widow例句
Black Widow BLACK WIDOW Black Widow. | I Enjoy a Few Drinks The black widow's versatile venom. Treatment of Black Widow Spider Bite Development of the Black Widow Micro Air Vehicle Treatment of Black Widow Spider Envenomation–Reply–I Wasteful killing in black widows: adaptive gluttony or urban ecological trap? Wasteful Killing in Urban Black Widows: Gluttony in Response to Food Abundance Male black widows court well-fed females more than starved females: silken cues indicate sexual cannibalism risk
