The term '70s Nightclub refers to a type of nightclub popular in the 1970s. The most common term for this type of nightclub is 'DISCOTHEQUE, ' which is an 11-letter word. A shorter version of this term is 'DISCO, ' which is a 5-letter word. These nightclubs were known for their loud music, flashing lights, and dance floors. They were often associated with the popular music genre of the same name, which was characterized by a strong beat and electronic instruments.