corselet

noun

1. Armor for the body, as, the body breastplate and backpiece taken together.
2. The entire suit of the day, including breastplate and backpiece, tasset and headpiece.
3. A tight-fitting item of clothing which covers the body and not the limbs.
4. A type of women's underwear, combining a bra and a girdle in one garment; a corselette.