A negligee is a loose garment for intimate wear, with both historical dressing-gown and modern nightwear uses.
The Metropolitan Museum of Art describes a historical example likely worn over nightclothes or while dressing. Contemporary makers can also use the name for a dress-like piece of sleepwear. HANRO lists a negligee and a nightdress separately within its Azelia range. The names tell a buyer how the maker distinguishes those styles. They do not by themselves establish which fibre is used, the exact length of the piece or whether a robe is included in the purchase.
In job listings
Lingerie and nightwear roles may meet this word in a range or in talking with clients. It can have older and newer senses, so it is worth following how the particular collection describes the piece. Search local jobs for “lingerie”.