What is the meaning of Négligée?

Carelessly or unceremoniously dressed.

In the style of a negligee; revealing, titillating.

A woman's lightweight gown of the eighteenth century.

A necklace of beads, pearls etc.

A state of careless undress or very informal attire.

A woman's loose-fitting nightgown, especially when short, lacy and/or revealing; a nightie.

feminine singular of négligé

feminine singular of négligé

Source: wiktionary.org