A dining room, especially one on an upper floor (traditionally the room in which the Last Supper took place).
A small circle or gathering of specialists (writers etc).
A meal served and eaten at a college's hall.
A corridor; a hallway.
A college's canteen, which is often but not always coterminous with a traditional hall.
A meeting room.
A building providing student accommodation at a university.
A living room.
A place for special professional education, or for conferring professional degrees or licences.
The principal room of a secular medieval building.
A manor house (originally because a magistrate's court was held in the hall of his mansion).