leotard
US /ˈliː.ə.tɑːrd/
UK /ˈliː.ə.tɑːrd/

1.
body, leotard
a close-fitting, one-piece garment, made of stretchy material, that covers the body from the shoulders to the top of the thighs, worn by acrobats, dancers, and gymnasts.
:
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The gymnast wore a sparkling blue leotard for her performance.
La ginnasta indossava un body blu scintillante per la sua esibizione.
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Dancers often wear leotards during practice to allow for full range of motion.
I ballerini spesso indossano body durante le prove per consentire una completa libertà di movimento.