The AI-powered English dictionary
plural nighties
(informal) A woman's nightgown or nightdress for wearing to bed. quotations examples
The clip shows the 67-year-old enfant terrible of French letters in pyjamas lying on a bed next to a woman in a nightie, smoking and laughing.
2023 March 28, Philip Oltermann, “Michel Houellebecq sex film to be released despite attempt to stop it”, in The Guardian
Alternative form of nighty (“good night”) examples