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

Apply cold wet cloths to your neck, armpits and groin, where blood flow is highest, and keep sipping cool water. — Allison Palmer updated June 24, Fort Worth Star-Telegram, 24 June 2026

Apply cold wet cloths to the neck, armpits and groin, the highest blood-flow areas, to accelerate cooling. — Allison Palmer, Sacbee.com, 24 June 2026

Parents and individuals should closely inspect pubic areas, the armpits and the base of the neck for any ticks. — Omer Awan, Forbes.com, 23 June 2026

Police said a witness heard a loud bang come from inside a home, where Chicago Fire Department paramedics were already treating the victim for a gunshot wound to the armpit when police arrived. — Dylan Olsen, CBS News, 21 June 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