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[ahrm-pit] /ˈɑrmˌpɪt/
the hollow under the arm at the shoulder; axilla.
Origin of armpit
1300-50; Middle English; see arm1, pit1 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the Web for armpit
Contemporary Examples
Historical Examples
  • At intervals she took Hattie's temperature, placing the clinical thermometer in the armpit.

    A Man's Woman Frank Norris
  • It is evident that the apex has descended and is turned toward the armpit.

    Doctor Pascal Emile Zola
  • He kicked out, his foot catching Scotty under the armpit, breaking his hold.

    The Pirates of Shan Harold Leland Goodwin
  • The witness resisted, but the sleeves were drawn up to the armpit.

  • That is a Frenchified word from the Arabic, meaning "armpit," because this star marks the right shoulder of Orion.

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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