A ballroom is a large room inside a building, the designated purpose of which is holding formal dances called balls. Traditionally, most balls were held in private residences; many mansions contain one or more ballrooms. In other large houses, a large room such as the main drawing room, long gallery, or hall may double as a ballroom, but a good ballroom should have the right type of flooring, such as hardwood flooring or marble flooring.
OmegaWiki Dictionary
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ballroom A large room used mainly for dancing.
ballroom Any of a variety of social dances performed by couples in a ballroom.
