Petticoat

(n.) A loose under-garment worn by women, and covering the body below the waist.

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