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
The broadhead crossbow bolt pierced into Eleanor’s upper torso through her armpit before hitting Megan in the chest, the sheriff’s office said.
—Samira Asma-Sadeque, People.com, 1 July 2025
The way to do it is with judicious use of strong contrast colours, and that’s exactly what Nike has done here, with those pinks, blues and reds underneath the armpits and down the side of the shorts.
—Nick Miller, New York Times, 28 June 2025
The pole went through her armpit and came out her back, Asbury Park Fire Department Battalion Chief Christopher Barkalow told the outlet.
—Dan Radel, USA Today, 27 June 2025
The lethal shot entered Hinton on the left side of his chest near his armpit, struck a rib and his heart, then exited near the sternum, the coroner said.
—Cameron Knight, Cincinnati Enquirer, 19 May 2025
See All Example Sentences for armpit
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Samira Asma-Sadeque, People.com, 1 July 2025
The way to do it is with judicious use of strong contrast colours, and that’s exactly what Nike has done here, with those pinks, blues and reds underneath the armpits and down the side of the shorts.
—Nick Miller, New York Times, 28 June 2025
The pole went through her armpit and came out her back, Asbury Park Fire Department Battalion Chief Christopher Barkalow told the outlet.
—Dan Radel, USA Today, 27 June 2025
The lethal shot entered Hinton on the left side of his chest near his armpit, struck a rib and his heart, then exited near the sternum, the coroner said.
—Cameron Knight, Cincinnati Enquirer, 19 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 21 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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