A jumpsuit is a type of clothing, a one-piece garment designed for utility wear in situations where efficiency and safety can be achieved by having complete coverage by a garment without the possibility of loose separates or openings. This is often used for aviator and astronaut gear for this reason, and is the part of many service organizations' uniforms.
Prisoners of the Gallitep labor camp were made to wear jumpsuits. (DS9 novel: The 34th Rule)