the.com/catsuit

means A skin-tight, one-piece garment covering the torso and legs (and usually the arms), prized for its sleek, body-hugging fit.

from A straightforward 20th-century compound of 'cat' and 'suit' — the cat part borrowed not from any cat garment but from the feline associations of sleekness, stealth, and close-fitting agility, the way a cat's skin seems to move as one with its body. The word rose alongside stretch fabrics like spandex and Lycra in the mid-1900s, which finally made a literal second-skin garment possible to manufacture and wear. Catwoman's costume did a lot of unpaid marketing for the term.