union suit

Noun

 * 1) one-piece underwear, usually long, combining drawers and long-sleeved, button-front undershirt in a single garment, with a flap in the seat that can be opened for defecation.

Translations

 * Czech:
 * French:
 * German: Hemdhose,
 * Hungarian:
 * Russian: мужско́й нате́льный комбинезо́н