Rotunda

(n.) A round building; especially, one that is round both on the outside and inside, like the Pantheon at Rome. Less properly, but very commonly, used for a large round room; as, the rotunda of the Capitol at Washington.

Thesaurus Entries

amusement park, cabaret, cafe chantant, cafe dansant, casino, chamber, chambre, dance floor, dance hall, dancery, dancing pavilion, entertainment industry, fun-fair, grand ballroom, juke joint, night spot, nightclub, nitery, resort, roadhouse, room, rotunda, salle, show biz, show business, tavern, theater