A nightclub is a type of theatre or bar or club where there are shows, singers and dance girls. Examples of this are the Folies Bergère in Paris; the Tropicana in Havana; and the Cotton Club in Harlem, Manhattan, New York City.
Also the name is used for places for adults socialize, meet others, and drink alcoholic beverages, like wine, beer, and mixed drinks.
Most nightclubs are only open in the evening and at night. Some are open during the day, but in those cases, they usually provides a different service such as a restaurants.