Advertisement - Continue reading below

Definition of "armpit" []

  • The hollow under the upper part of the arm at the shoulder. (noun)
  • Slang The most miserable or undesirable place in a particular area. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Use "armpit" in a sentence
  • "Also, making fart noises with your armpit is hilarious."
  • "While the rest of America prospered after World War II, fast-shrinking Scranton became known as the armpit of Pennsylvania, a designation it has never entirely shaken."
  • "My armpit is itching and I can’t scratch it but it’s driving me insane."