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
In a second photo, the actor was seen with his shirt ruched up under his armpits to catch the breeze.
—Raven Brunner, People.com, 12 Apr. 2025
Some models include mesh along the sides, back or armpit area to increase airflow and keep riders cool on hot days.
—Bestreviews, Mercury News, 7 Apr. 2025
The most serious stab wounds, authorities said, were in the woman’s right armpit and near her neck and shoulder.
—Kate Linderman, Kansas City Star, 18 Apr. 2025
He then was shot on the right side of his chest, the bullet missing his heart but lodging into his left armpit.
—Ryanne Mena, Oc Register, 16 May 2025
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Raven Brunner, People.com, 12 Apr. 2025
Some models include mesh along the sides, back or armpit area to increase airflow and keep riders cool on hot days.
—Bestreviews, Mercury News, 7 Apr. 2025
The most serious stab wounds, authorities said, were in the woman’s right armpit and near her neck and shoulder.
—Kate Linderman, Kansas City Star, 18 Apr. 2025
He then was shot on the right side of his chest, the bullet missing his heart but lodging into his left armpit.
—Ryanne Mena, Oc Register, 16 May 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 3 Jul. 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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