singlet
US /ˈsɪŋ.ɡlət/
UK /ˈsɪŋ.ɡlət/
1.
a collarless, sleeveless garment, typically made of cotton, worn as an undershirt or for athletic activities.
:
•
He wore a white singlet under his shirt.
•
The runner wore a lightweight singlet for the marathon.