singlet
US /ˈsɪŋ.ɡlət/
UK /ˈsɪŋ.ɡlət/

1.
canottiera, maglietta intima, singlet
a collarless, sleeveless garment, typically made of cotton, worn as an undershirt or for athletic activities.
:
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He wore a white singlet under his shirt.
Indossava una canottiera bianca sotto la camicia.
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The runner wore a lightweight singlet for the marathon.
Il corridore indossava una canottiera leggera per la maratona.