nightgown

A loose garment worn in bed by women and girls.

A loose gown worn in one’s chamber, at night or in the daytime; a dressing-gown; a robe de chambre; a negligée gown or house-dress, for either men or women.

A night-dress for women, high in the neck, with long sleeves, and covering the whole person.

A night-dress for men.

A loose gown used for undress; also, a gown used for a sleeping garment.

A garment mainly worn by women for sleeping in.

lingerie consisting of a loose dress designed to be worn in bed by women