Historically a piece of plate armour covering the torso.
In biology, the thorax of an insect, or a protective band of enlarged scales in the shoulder region of a fish.
In female clothing, a corselet, or corselette, is a type of foundation garment, sharing elements of both bras and girdles. It extends from straps over the shoulders down the torso to stop around the top of the legs. It may incorporate lace in front or in back. As an undergarment, a corselet can be open-style (with suspenders attached) or panty style.