assembly room 
noun chiefly British
A public room or hall in which meetings or social functions are held: [in names]: the Derby Assembly Rooms...
- It drew laughter from the other schoolchildren packed into the assembly room.
- Meriod Hall was a great assembly room in the centre of town, a large, fine space with glossed wood floors, and brightened by chandelier light.
- The first floor would be used for training and the ground floor would have an assembly room, lounge and refreshment bar.
- night boat
- night bomber
- night bombing
- night-bound
- night box
- night-butterfly
- nightcap
- night-capped
- nightcap wig
- night cart
- night-cellar
- night chain
- night climber
- night-climbing
- night clock
- nightclothes
- night-cloud
- nightclub
- nightclubber
- nightclubbing
- nightclubby
- night coach
- night court
- night crawler
- night cream