A building comprising a number of lving units (apartments{4}) designed for separate housekeeping tenements, but having conveniences, such as heat, light, elevator service, etc., furnished in common; contrasted to a detached dwelling. Sometimes distinguished in the United States from a flat house, in which each living unit comprises one entire floor, whereas in an apartment house a floor may be partitioned into any number of apartments{4}.

A building that contains apartments.

a building that is divided into apartments

a building composed of three or more dwelling units

an aggregation of dwellings and it is not unreasonable to classify it with other dwellings rather than with hotels