rec room
From Longman Dictionary of Contemporary Englishrec roomrec room /ˈrek ruːm, -rʊm/ noun [countable] American English informal x-refa recreation roomExamples from the Corpusrec room• She wished they could sit up here, but Lester always hurried her downstairs to the paneled rec room.• Suppose Mark is fighting with his brother Adam or they are tearing the rec room apart.• All the way down to the rec room, she reasoned it out.