a building, as at a college, containing a number of private or semiprivate rooms for residents, usually along with common bathroom facilities and recreation areas.
2.
a room containing a number of beds and serving as communal sleeping quarters, as in an institution, fraternity house, or passenger ship.
Origin: 1475–85; < Latindormītōrium bedroom, equivalent to dormī(re) to sleep + -tōrium-tory2