[ uhn-der-shurt ]
See synonyms for undershirt on Thesaurus.com
  1. 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.

Origin of undershirt

First recorded in 1640–50; under- + shirt

Words Nearby undershirt

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use undershirt in a sentence

  • I remember a few years ago when one could not find "undershirt" or "catboat" in the dictionary.

  • He peeled down to his undershirt with short sleeves, and I saw in his muscles one reason why he was never tired.

    The Life of James McNeill Whistler | Elizabeth Robins Pennell
  • The man was in his woollen undershirt, but Turnbull knew the energetic, apologetic head of the sergeant of police.

    The Ball and The Cross | G.K. Chesterton

British Dictionary definitions for undershirt


/ (ˈʌndəˌʃɜːt) /

  1. mainly US and Canadian an undergarment worn under a blouse or shirt: Brit name: vest

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