foundation garmentn.A woman's supporting undergarment, such as a corset or girdle.
[TahlilGaran] American Dictionary ▲
foundation garment n. A close-fitting garment designed for women to wear underneath their clothes to make them look slim; a piece of woman's underwear.
Jane wears a foundation garment under her evening dress. [TahlilGaran] English Idioms Dictionary ▲