armpit

noun

arm·​pit ˈärm-ˌpit 

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

Clusters of lymph nodes are located under the armpit near the breast, and the lymph nodes are often the first place breast cancer spreads. —Julie Scott, Msn, Anp-Bc, People.com, 28 Feb. 2025

The victim was injured in her left heel, right leg and upper rib cage near her armpit, sheriff’s officials said. —Lauren Penington, The Denver Post, 13 Feb. 2025

But the talk show host wasn't going to just leave Blair as the show's only armpit adventurer, either. —EW.com, 11 Feb. 2025

This type of dermatitis can also affect other areas of the body, such as the ears, eyebrows, center of the face, eyelids, upper chest, upper back, armpits, and groin area. —Ariana Yaptangco, Glamour, 6 Mar. 2025

Word History

First Known Use

14th century, in the meaning defined at sense 1

Rhymes for armpit

• acquit
• admit
• amrit
• backlit
• befit
• cockpit
• commit
• dalit
• dendrite
• emit
• illite
• misfit

Kids Definition

armpit

noun

arm·​pit ˈärm-ˌpit 

: the hollow beneath the spot where the arm and shoulder join

Medical Definition

armpit

noun

arm·​pit ˈärm-ˌpit 

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