An armpit is defined as the body part underneath the area where the arm meets the shoulder.
The area on the body where people apply deodorant is an example of an armpit.
The definition of an armpit can refer to a bad, gross or unpleasant place.
An example of an armpit is the dirty section of a city known for its high crime rates.
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Woman with arm raised revealing armpit.
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the hollow under the arm at the shoulder; axilla
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
noun The hollow under the upper part of the arm at the shoulder. Slang The most miserable or undesirable place in a particular area. The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. armpit - Medical Definition
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® Medical Dictionary Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.