petticoat

A light woman's undergarment worn under a dress or skirt, and hanging either from the shoulders or (now especially) from the waist; a kind of slip, worn to make the skirt fuller, or for extra warmth.

(historical) A woman's undercoat, worn to be displayed beneath an open gown.

(slang) A woman.

(historical) A tight, usually padded undercoat worn by women over a shirt and under the doublet.

(historical) A fisherman's loose canvas or oilcloth skirt.

(historical) A bell-mouthed piece over the exhaust nozzles in the smokebox of a locomotive, strengthening and equalising the draught through the boiler-tubes.

(no longer used, historical) A type of ornamental skirt or underskirt, often displayed below a dress; chiefly in plural, designating a woman's skirts collectively.

(old-fashioned) Feminine; female; involving a woman.

To dress in a petticoat.