unitard

/ˈjunɪtɑrd/
noun
  1. A one-piece tight-fitting garment that covers the torso and legs, often worn by dancers, gymnasts, or acrobats.
    • She bought a new unitard for her yoga class because it was comfortable and stretchy.
    • The gymnast wore a bright blue unitard during her floor routine.
    • Dancers often practice in a unitard to allow full freedom of movement.
Synonyms