- A room in a building; a division in a house, separated from others by partitions.
- A set or suite of rooms.
- A compartment.(Obs)
- A room or suite of rooms in a building comprising a dwelling unit separate from others in the building, and typically having its own separate bath, sanitary, and kitchen facilities. Such apartments are in most cases rented from the owner by those dwelling in them.
Etymology: F. appartement; cf. It. appartamento, fr. appartare to separate, set apart; all fr. L. ad + pars partis, part. See Apart