A room for dancing; a ball-room; specifically, in Great Britain, a public room licensed for music and dancing.(noun)
The Century Dictionary (Public Domain)
Use "dancing-room" in a sentence
"On the floor of the dancing-room, which opened out at the rear, three couples were waltzing drearily to the strains of a violin and a piano."
"It is probable they would have been less delicate on the subject, had not the Swiss brought into the dancing-room along with him his eternal halberd, the size, and weight, and thickness of which boded little good to any one whom the owner might detect in the act of making merry at his expense."
"There was a great crowding and tittering when the child came in, led by his half-brother, who walked into the dancing-room"