arm·​pit | \ˈärm-ˌpit \

Definition of armpit 

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

Examples of armpit in a Sentence

a city described as the armpit of America

Recent Examples on the Web

Think about the armpits of your shirt on your sweatiest summer day. Marci Robin, Allure, "The FDA Has Approved Qbrexza Cloths to Treat Excessive Underarm Sweating," 2 July 2018 Suddenly, gunfire erupted, with bullets hitting Kennedy in the back, through his armpit and another into his brain. Anh Do,, "Robert Kennedy Jr. joins chorus of second-gunman theorists over his father's assassination," 27 May 2018 The space agency began collecting blood, spit, and swabs (from foreheads, armpits, and yes, buttholes) from astronauts back in 2013, and gathered the final round this past February. Megan Molteni, WIRED, "NASA's Astro-Mice Will Test What Space Does to Your Gut," 28 June 2018 Apocrine glands, however, are concentrated in your armpits and groin and produce a different kind of fatty sweat. Macaela Mackenzie, Allure, "How to Tell If Your Bad Body Odor Is Cause for Concern," 8 May 2018 Police are also investigating a double shooting in which an elderly man was shot on the 5200 block of Rodman Street shortly after 3:15 a.m. A 95-year-old man was shot in his armpit and taken to Penn Presbyterian Medical Center in stable condition. Katherine Nails,, "1 dead, 6 shot in just more than an hour in Philly," 12 July 2018 Remembering it put a shock of sweat in his armpits, and his stomach gave a fearful churn. Andrew Liptak, The Verge, "A transgender girl rises up against alien invaders in Rich Larson’s novel Annex," 8 July 2018 At times, the Grammy award-winning musician Paula Cole received less attention for her music than for her unshaven armpits. Rhaina Cohen, The New Republic, "What the 1990s Got Wrong," 29 June 2018 In 2010, Cousins inexplicably did an entire post-game interview with a zonked-looking Drake’s head tucked in his armpit. Morgan Enos, Billboard, "Drake's 8 Most Memorable Sports Fan Moments," 3 May 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'armpit.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of armpit

14th century, in the meaning defined at sense 1

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Statistics for armpit

Last Updated

2 Nov 2018

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Time Traveler for armpit

The first known use of armpit was in the 14th century

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More Definitions for armpit



English Language Learners Definition of armpit

: the hollow area on a person's body beneath the place where the arm and the shoulder meet

: the worst area in a place


arm·​pit | \ˈärm-ˌpit \

Kids Definition of armpit

: the hollow under a person's arm where the arm joins the shoulder


arm·​pit | \ˈärm-ˌpit \

Medical Definition of armpit 

: the hollow beneath the junction of the arm and shoulder : axilla

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Comments on armpit

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playful or foolish behavior

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