Underskirt

(n.) A petticoat; the foundation skirt of a draped dress.

Thesaurus Entries

Balmoral, Skivvies, bloomers, body stocking, brassiere, briefs, bustle, camisole, chemise, combination, corset, crinoline, distaff, drawers, female, feminine, foundation garment, gentlewomanlike, girlish, gynecic, gynecoid, gynic, kittenish, ladylike, little-girlish, maidenly, matronal, matronlike, matronly, muliebral, pannier, panties, pants, shift, shorts, singlet, slip, smock, tournure, underpants, underskirt, undervest, union suit, vest, womanish, womanlike, womanly