1
: the hollow beneath the junction of the arm and shoulder
2
: the least desirable place : pit
77th Street Station … was the armpit of detective duty—
Joseph Wambaugh
Joseph WambaughExamples of armpit in a Sentence
a city described as the armpit of America
Recent Examples on the Web
Our mother had Finley hooked by the armpits and frog-kicked the pair of them toward shore.
—Charna Flam, People.com, 25 Aug. 2025
And there’s nothing worse than sweating under your waterproof layers, so the zippable armpit vents are a big bonus.
—Olivia Young, Travel + Leisure, 22 Aug. 2025
The youngest boy was charged with assault, while a 15-year-old boy was hit with assault, menacing and weapon possession charges after the victim was stabbed in the armpit and abdomen in Maria Hernandez Park near Starr St. and Irving Ave.
—Kerry Burke, New York Daily News, 21 Aug. 2025
Unifi’s anti-odor technologies are inherent to the yarn and continuously block bacteria (likely found in armpits and feet) from growing on the fabric for what Unifi considers the product’s lifetime: 50 launderings.
—Alexandra Harrell, Sourcing Journal, 19 Aug. 2025
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Charna Flam, People.com, 25 Aug. 2025
And there’s nothing worse than sweating under your waterproof layers, so the zippable armpit vents are a big bonus.
—Olivia Young, Travel + Leisure, 22 Aug. 2025
The youngest boy was charged with assault, while a 15-year-old boy was hit with assault, menacing and weapon possession charges after the victim was stabbed in the armpit and abdomen in Maria Hernandez Park near Starr St. and Irving Ave.
—Kerry Burke, New York Daily News, 21 Aug. 2025
Unifi’s anti-odor technologies are inherent to the yarn and continuously block bacteria (likely found in armpits and feet) from growing on the fabric for what Unifi considers the product’s lifetime: 50 launderings.
—Alexandra Harrell, Sourcing Journal, 19 Aug. 2025
See All Example Sentences for armpit
Cite this Entry
“Armpit.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/armpit. Accessed 8 Sep. 2025.
Copy CitationKids Definition
armpit
noun
arm·pit
ˈärm-ˌpit 
: the hollow beneath the spot where the arm and shoulder join
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