a collarless, usually pullover undergarment for the torso, usually of cotton and either sleeveless and low-cut or with sleeves, worn chiefly by men and children.

1640–50; under- + shirt

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To undershirt
World English Dictionary
undershirt (ˈʌndəˌʃɜːt)
chiefly (US), (Canadian) Brit name: vest an undergarment worn under a blouse or shirt

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
Word Origin & History

1648, from under + shirt. Cf. N.Fris. onnersjürt, Dan. underskjorte.
Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
Example sentences
It is also a good idea to bring an extra undershirt or two to change during the
  business day.
He uses vest, not in place of waistcoat, but in place of undershirt.
Dressed in an undershirt and jeans, he is shy and unaccustomed to visitors.
Her husband, feeling disconsolate, goes to the guest room and draws the
  writer's old undershirt on over his business suit.
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature