nounchiefly North American
- Underpants, especially those worn by men or boys.More example sentences
- I've slept in my undershorts, but I was too tired to change out of my shirt last night.
- Wandering the streets wearing only his undershorts and trying to find help, he is spotted by two young women who try to help him.
More definitions of undershortsDefinition of undershorts in:
- The British & World English dictionary