back room
noun/ˌbæk ˈruːm/, /ˌbæk ˈrʊm/
/ˌbæk ˈruːm/, /ˌbæk ˈrʊm/
- a room at the back of a building, away from the entrance, often where secret activities take place
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back room
Definition of back room noun from the Oxford Advanced Learner's Dictionary