What is goodnight lady?

As an AI language model, I cannot be certain which specific "Goodnight Lady" you may be referring to, as there are several books, songs, TV shows, and movies with that name. However, I can provide some general information about what "Goodnight Lady" could represent in different contexts:

• Goodnight Lady is a phrase commonly used to bid farewell to a woman at night. It's often used as a polite and respectful way of saying "goodbye" or "goodnight" to a female acquaintance.
• "Goodnight Lady" is a 1936 musical revue created by Cole Porter, which features a variety of comedic sketches, musical acts, and dance routines. It was notable for being one of the first all-black revues in Broadway history.
• "Goodnight Lady" is a novel by Martina Cole, published in 1994, which tells the story of Briony Cavanagh, a young woman who becomes involved in the criminal underworld of London's East End. The book was praised for its gritty realism and engaging characters.
• "Goodnight Lady" is a song by British band 10cc, released in 1981. It was written by Eric Stewart and Graham Gouldman and was a minor hit in the UK charts. The song features a heartfelt message of love and appreciation to a woman who has helped the singer through tough times.
• "Goodnight, Ladies" is a traditional folk song that has been sung for over a century. The song typically features a chorus of men singing a farewell to women they have been drinking or socializing with. It's often sung at the end of a night out, or at rowdy gatherings like bachelor parties or frat houses.