From Longman Dictionary of Contemporary Englishsmoking roomˈsmoking room (also smoking lounge American English) noun [countable] TBBSMOKEa room where smoking is allowed in a public building
Examples from the Corpus
smoking room• It also had a smoking room, which was furnished with one electric light and pressurised to prevent hydrogen seeping in.• Next to the open balcony in the King's coach was a handsome smoking room, supplied with central table and four armchairs.• Tom had referred to the place as' George's smoking room.• All around the smoking room, gentlemen seemed to be standing in clusters laughing and clapping each other on the shoulder.• Churchill in office would never have wasted time in the smoking room without an audience. 