A dining room is a room in a house, apartment, school etc that is reserved primarily for eating meals (breakfast, lunch or dinner) although other activities may also take place there outside of meal times.a room in which meals are eaten, as in a home or hotel, especially the room in which the major or more formal meals are eaten. Informal. the furniture usually used in a dining room and sometimes sold as a matching set, as a dining table, chairs, and sideboard; dining room suite: a sale on dining rooms.

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