D defs.my
Entry 1 sense Webster, 1913

Singlet

· Sin·glet · IPA /ˈsɪŋɡlɪt/
01 n. An unlined or undyed waistcoat; a single garment; -- opposed to doublet.
  1. 1.
    An unlined or undyed waistcoat; a single garment; -- opposed to doublet.[Prov. Eng.]