1) Broadway musical 2) Cotillion locale 3) Dance hall 4) Dance palace 5) Dance venue 6) Dancing style 7) Exclusively Anglo word 8) Exclusively Saxon word 9) Large hall for dancing 10) Lodgings for Lucille 11) Place for a cotillion 12) Prom place 13) Room 14) Rooms 15) Site in the game clue 16) Waltz site 1) Dancehall 2) Disco 3) Discotheque 
A ballroom is a large room inside a building, the designated purpose of which is holding large formal parties 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 ...[musical] Ballroom is a musical with a book by Jerome Kass and music by Billy Goldenberg and lyrics by Alan and Marilyn Bergman. Based on Kass`s teleplay for the 1975 Emmy Award-winning television drama Queen of the Stardust Ballroom, the plot focuses on lonely widow Bea Asher, who becomes romantically involved with Alfred Rossi, a mail car...
• (n.) A room for balls or dancing.
Ball'room` noun A room for balls or dancing. 
[n] - large room used mainly for dancing
dance hall noun large room used mainly for dancing