black widow

noun

: a venomous New World spider (Latrodectus mactans of the family Theridiidae) the female of which is black with an hourglass-shaped red mark on the underside of the abdomen
broadly : any of various related venomous spiders that have a large globular, usually glossy, dark abdomen often marked with red and long and wiry legs

Illustration of black widow

Illustration of black widow

Examples of black widow in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The venom in a black widow spider is extremely toxic. Laura Schober, Health, 19 Sep. 2024 Treatments for a black widow bite include:41 Pain-relieving medicines: Nonsteroidal anti-inflammatory drugs (NSAIDs) target pain points caused by a black widow bite. Laura Schober, Health, 19 Sep. 2024 How to identify a black widow According to a guide from Purdue University's entomology department, a female black widow is black and about the size of a penny with its legs extended. Jenny Porter Tilley, The Indianapolis Star, 17 Sep. 2024 Other symptoms of a spider bite on the eyelid can include: Bite marks Headache Itching Tearing While most spider bites are not serious, two types of spiders found in the United States that are dangerous are the brown recluse spider and the black widow. Andrew Greenberg, Verywell Health, 12 Sep. 2024 See all Example Sentences for black widow 

Word History

First Known Use

1830, in the meaning defined above

Time Traveler
The first known use of black widow was in 1830

Dictionary Entries Near black widow

Cite this Entry

“Black widow.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/black%20widow. Accessed 22 Nov. 2024.

Kids Definition

black widow

noun
: a poisonous New World spider the female of which is black with an hourglass-shaped red mark on the underside of the abdomen

Medical Definition

black widow

noun
black wid·​ow -ˈwid-ˌō How to pronounce black widow (audio)
: a venomous New World spider of the genus Latrodectus (L. mactans) the female of which is black with an hourglass-shaped red mark on the underside of the abdomen
broadly : any other spider of the genus Latrodectus

More from Merriam-Webster on black widow

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!