underarm

[uhn-der-ahrm]
noun
  1. armpit.
adverb
  1. underhand.

Origin of underarm

First recorded in 1810–20; under- + arm1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for underarm

Historical Examples of underarm


British Dictionary definitions for underarm

underarm

adjective
  1. (of a measurement) extending along the arm from wrist to armpit
  2. sport of or denoting a style of throwing, bowling, or serving in which the hand is swung below shoulder level
  3. below the arm
adverb
  1. in an underarm style
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

Word Origin and History for underarm
adj.

1816, "underhand" (in reference to a style of throwing), from under + arm (n.1). First attested 1908 in dressmaking sense of "seams on the lower half of the arm-hole;" as a euphemism for armpit, it is attested from 1930s, popularized by advertisers.

Online Etymology Dictionary, © 2010 Douglas Harper

underarm in Medicine

underarm

[ŭndər-ärm′]
adj.
  1. Located, placed, or used under the arm.
n.
  1. The armpit.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.