ballroom

• ball-room (archaic)

ball +‎ room

• IPA^(key): /ˈbɔːlɹuːm/, /ˈbɔːlɹʊm/

• Audio (Southern England)

  (file)

• Rhymes: -ɔːlɹuːm, -ɔːlɹʊm

ballroom (plural ballrooms)

1. A large room used for dancing and banquets.
   • 1909, Archibald Marshall [pseudonym; Arthur Hammond Marshall], chapter I, in The Squire’s Daughter, New York, N.Y.: Dodd, Mead and Company, published 1919, →OCLC:

     The boy became volubly friendly and bubbling over with unexpected humour and high spirits. He tried to persuade Cicely to stay away from the ball-room for a fourth dance. Nobody would miss them, he explained.

2. A type of elegant dance.

• room

ballroom (third-person singular simple present ballrooms, present participle ballrooming, simple past and past participle ballroomed)

1. (intransitive) To take part in ballroom dancing.

• moorball