Dictionary.com
Thesaurus.com
Synonyms

rumpus room

American  

noun

  1. a recreation room, especially one for children, as in a house.


rumpus room British  

noun

  1. a room used for noisy activities, such as parties or children's games

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of rumpus room

An Americanism dating back to 1935–40