singlet

noun

sin·​glet ˈsiŋ-glət 

1

[from its having only one thickness of cloth] chiefly British : an athletic jersey

also : undershirt

2

: an atom or molecule that has no net electronic magnetic moment

also : an excited state of an atom or molecule that is a singlet

Examples of singlet in a Sentence

Recent Examples on the Web

Erivo enters in dark trousers and singlet, her body lean, sinewy, covered in tattoos, her head shorn, nose ringed, fingernails fiendishly extended, a vampire in waiting. —Demetrios Matheou, HollywoodReporter, 18 Feb. 2026

The team breaks out black singlets for the finals. —Don Norcross, San Diego Union-Tribune, 17 Feb. 2026

Outside of his ’fits, one of Lyles’ other attention-grabbing moves is pulling Yu-Gi-Oh! (the Japanese manga series) cards out of his singlet immediately before races. —Ian Servantes, Footwear News, 11 Nov. 2025

This shared amateur background, combined with their use of in-ring singlets, has not been ignored by WWE fans. —Andrew Ravens‎, MSNBC Newsweek, 23 Oct. 2025

Word History

First Known Use

circa 1746, in the meaning defined at sense 1

Kids Definition

singlet

noun

sin·​glet ˈsiŋ-glət 

chiefly British

: undershirt