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

Other photos displayed an open bullet wound under Shakur’s right armpit. — Andy Rose, CNN Money, 19 Aug. 2026

Best of luck to them and whoever has to clean the Taskmaster house after that armpit challenge. — Roxana Hadadi, Vulture, 19 Aug. 2026

Gavin gave her expert analysis of the autopsy, explaining that the bullet that killed Shakur entered through his right armpit area and went through a lung into his chest. — Liza Esquibias, USA Today, 19 Aug. 2026

The video then cut to a picture of herself in a hospital gown with wires attached to her body, along with a snap of what appeared to be the chest drain inserted into her armpit. — Gina Kalsi, PEOPLE, 13 Aug. 2026

Word History

First Known Use

14th century, in the meaning defined at sense 1

Rhymes for armpit

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

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