bodysuit
US /ˈbɑː.di.suːt/
UK /ˈbɑː.di.suːt/

1.
body, tutina
a one-piece garment that covers the torso and sometimes the arms and legs, often worn as underwear or as a fashion item
:
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She wore a black lace bodysuit under her blazer.
Indossava un body di pizzo nero sotto il blazer.
•
The gymnast's uniform was a brightly colored bodysuit.
L'uniforme della ginnasta era un body dai colori vivaci.