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
On the metabolic side, patients might develop insulin resistance, weight gain, difficulty with weight loss and dark velvety skin patches around the neck or armpits, as well as significantly elevated risk of prediabetes, type 2 diabetes and cardiovascular disease.
—Adaira Landry, Forbes.com, 15 May 2026
The microbes and the algae tend to flourish under these clamp lights; the optimal temperature for microbes is ninety-five degrees—armpit temperature.
—Tina Rivers Ryan, Artforum, 14 May 2026
Humans should check any crevices where the parasites can latch on, including the back of the knees, waistband, groin area, armpits or scalp.
—Lauren Penington, Denver Post, 14 May 2026
The next night, Leo came into my bedroom at 9 o’clock and said his armpit was aching.
—Samantha Silver, MSNBC Newsweek, 14 May 2026
See All Example Sentences for armpit
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Adaira Landry, Forbes.com, 15 May 2026
The microbes and the algae tend to flourish under these clamp lights; the optimal temperature for microbes is ninety-five degrees—armpit temperature.
—Tina Rivers Ryan, Artforum, 14 May 2026
Humans should check any crevices where the parasites can latch on, including the back of the knees, waistband, groin area, armpits or scalp.
—Lauren Penington, Denver Post, 14 May 2026
The next night, Leo came into my bedroom at 9 o’clock and said his armpit was aching.
—Samantha Silver, MSNBC Newsweek, 14 May 2026
See All Example Sentences for armpit
Cite this Entry
“Armpit.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/armpit. Accessed 21 May. 2026.
Copy CitationKids Definition
armpit
noun
arm·pit
ˈärm-ˌpit 
: the hollow beneath the spot where the arm and shoulder join
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