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Synonyms

armpit

American  
[ahrm-pit] / ˈɑrmˌpɪt /

noun

  1. the hollow under the arm at the shoulder; axilla.

  2. Slang. the worst possible place or area.

    Their car has broken down, stranding them in the armpit of California until it can be fixed.
armpit British  
/ ˈɑːmˌpɪt /

noun

  1. Technical name: axilla.  the small depression beneath the arm where it joins the shoulder

  2. slang an extremely unpleasant place

    the armpit of the Mediterranean
"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of armpit

First recorded in 1300–50; Middle English; arm 1 + pit 1 ( def. )

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.