noun, plural dor·mi·to·ries. 1.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; <
Latin dormītōrium bedroom, equivalent to
dormī(
re) to sleep +
-tōrium -tory2