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

Sodha suggests soaking 7% glycolic acid on a cotton pad, then applying it to the armpits three or four times per week. — Helen Carefoot, Flow Space, 3 Aug. 2026

Officers reported that surveillance video showed Rivas pursued the victim, wrestled with him on the ground, and stabbed him in an armpit area. — David Lyons, Sun Sentinel, 3 Aug. 2026

Most commonly, Vo says excessive sweating happens in the armpits, palms, soles of feet, face and scalp, though others have more widespread sweating. — Alexandra Frost, USA Today, 2 Aug. 2026

Symptoms can include a lump in the armpit, dimpled skin on the chest, red or flaky skin near the nipple, pain or tenderness on the chest or armpit, clear or bloody nipple discharge and an inverted nipple, per the Cleveland Clinic. — Toria Sheffield, PEOPLE, 18 July 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