lady of the night

noun4

1. •
   (euphemistic) A female prostitute.

   • They call her the lady of the night She's a woman of the world And easy-living girl with love for sale That's what they call her, the lady of the night. — 1976
2. •
   Any of certain species of genus Brunfelsia.
3. •
   Night-blooming cestrum (Cestrum nocturnum), a Central American shrub.
4. •
   Any member of the species Nyctanthes arbor-tristis.