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[ahrm-pit] /ˈɑrmˌpɪt/
the hollow under the arm at the shoulder; axilla.
Origin of armpit
Middle English word dating back to 1300-50; See origin at arm1, pit1 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for armpit


the small depression beneath the arm where it joins the shoulder Technical name axilla, related adjective axillary
(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
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Word Origin and History for armpit

mid-14c., from arm (n.1) + pit (n.1). Arm-hole (early 14c.) was used in this sense but was obsolete by 18c. Colloquial armpit of the nation for any locale regarded as ugly and disgusting was in use by 1965.

Online Etymology Dictionary, © 2010 Douglas Harper
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armpit in Medicine

armpit arm·pit (ärm'pĭt')
The hollow under the upper part of the arm below the shoulder joint, bounded by the pectoralis major, the latissimus dorsi, the anterior serratus muscles, and the humerus, and containing the axillary artery and vein, the infraclavicular part of the brachial plexus, lymph nodes and vessels, and areolar tissue. Also called axilla, axillary fossa.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Slang definitions & phrases for armpit



A very undesirable place; geographical nadir; the pits; asshole: My home town is the armpit of the universe

Related Terms

pull teeth

The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D.
Copyright (C) 2007 by HarperCollins Publishers.
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