1
: any of a family (Boidae) of large snakes that kill by constriction and that includes the boa constrictor, anaconda, and python
2
: a long fluffy scarf

Examples of boa in a Sentence

Recent Examples on the Web
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Her strapless gown also touted a plunging neckline with subtle boning, teamed with a massive feather boa for added drama. Angel Saunders, People.com, 4 July 2025 Though the platforms became the star of the show, other parts of Campbell’s ensemble, which included a bright pink feather boa and a Scottish inspired kilt, were also made famous by the fall. Rosa Rahimi, CNN Money, 19 June 2025 Between each eye and nostril sits a deep pit organ — more advanced than anything found in boas or pythons. Scott Travers, Forbes.com, 25 Apr. 2025 But no known boa alive today actively specializes in hunting fish. Scott Travers, Forbes.com, 21 Apr. 2025 See All Example Sentences for boa

Word History

Etymology

Latin, a water snake

First Known Use

14th century, in the meaning defined at sense 1

Time Traveler
The first known use of boa was in the 14th century

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Cite this Entry

“Boa.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/boa. Accessed 11 Jul. 2025.

Kids Definition

boa

noun
1
: any of various large snakes (as the boa constrictor, anaconda, or python) that crushes its prey
2
: a long fluffy scarf of fur, feathers, or fabric

More from Merriam-Webster on boa

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