clubroom
/ˈklʌbruːm/Definitions
1. noun
a room or area in a school, university, or other institution where a club or organization meets
“The students gathered in the clubroom to discuss their plans for the school’s annual fair.”
2. noun
a room in a private house or other building that is reserved for a particular activity or interest, especially a hobby
“The family converted their garage into a clubroom for their model train enthusiasts.”