apartment

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. A room or suite of rooms designed as a residence and generally located in a building occupied by more than one household.
2. n. An apartment house: a row of high-rise apartments.
3. n. A room.
4. n. Chiefly British A suite of rooms within a larger building set aside for a particular purpose or person.

Century Dictionary and Cyclopedia

1. n. A room in a building; a division in a house separated from others by partitions.
2. n. plural A suite or set of rooms; specifically, a suite of rooms assigned to the use of a particular person, party, or family.
3. n. A flat (which see).
4. n. 4. A compartment.

Wiktionary

1. n. A complete domicile occupying only part of a building.
2. n. archaic A suite of rooms within a domicile, designated for a specific person or persons and including a bedroom.
3. n. obsolete A division of an enclosure that is separate from others; a compartment

GNU Webster's 1913

1. n. A room in a building; a division in a house, separated from others by partitions.
2. n. A set or suite of rooms.
3. n. obsolete A compartment.
4. n. 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.

WordNet 3.0

1. n. a suite of rooms usually on one floor of an apartment house