A dining room is a room for consuming food

Eating

Eating is the ingestion of food to provide for all organisms their nutritional needs, particularly for energy and growth. Animals and other heterotrophs must eat in order to survive: carnivores eat other animals, herbivores eat plants, omnivores consume a mixture of both plant and animal matter,...

. In modern times it is usually adjacent to the kitchen

Kitchen

A kitchen is a room or part of a room used for cooking and food preparation.In the West, a modern residential kitchen is typically equipped with a stove, a sink with hot and cold running water, a refrigerator and kitchen cabinets arranged according to a modular design. Many households have a...

 for convenience in serving, although in medieval times

Medieval Times

Medieval Times Dinner and Tournament is a family dinner theater featuring staged medieval-style games, sword-fighting, and jousting performed by a cast of 75 actors and 20 horses. Each location is housed in a replica 11th-century castle, with the exception of the Toronto location, which is housed...

 it was often on an entirely different floor level. Historically the dining room is furnished with a rather large dining table and a number of dining chairs; the most common shape is generally rectangular with two armed end chairs and an even number of un-armed side chairs along the long sides.
In the Middle Ages

Middle Ages

The Middle Ages is a periodization of European history from the 5th century to the 15th century. The Middle Ages follows the fall of the Western Roman Empire in 476 and precedes the Early Modern Era. It is the middle period of a three-period division of Western history: Classic, Medieval and Modern...

, upper class

Upper class

In social science, the "upper class" is the group of people at the top of a social hierarchy. Members of an upper class may have great power over the allocation of resources and governmental policy in their area.- Historical meaning :...

 Briton

British people

The British are citizens of the United Kingdom, of the Isle of Man, any of the Channel Islands, or of any of the British overseas territories, and their descendants...

s and other Europe

Europe

Europe is, by convention, one of the world's seven continents. Comprising the westernmost peninsula of Eurasia, Europe is generally 'divided' from Asia to its east by the watershed divides of the Ural and Caucasus Mountains, the Ural River, the Caspian and Black Seas, and the waterways connecting...

an nobility

Nobility

Nobility is a social class which possesses more acknowledged privileges or eminence than members of most other classes in a society, membership therein typically being hereditary. The privileges associated with nobility may constitute substantial advantages over or relative to non-nobles, or may be...

 in castle

Castle

A castle is a type of fortified structure built in Europe and the Middle East during the Middle Ages by European nobility. Scholars debate the scope of the word castle, but usually consider it to be the private fortified residence of a lord or noble...

s or large manor house

Manor house

A manor house is a country house that historically formed the administrative centre of a manor, the lowest unit of territorial organisation in the feudal system in Europe. The term is applied to country houses that belonged to the gentry and other grand stately homes...

s dined in the Great Hall

Great Hall

Great Hall may refer to* Great hall, the main room of a royal palace, nobleman's castle or large manor house* Great Hall of the People, Tiananmen Square, Beijing* Great Hall of the University of Sydney, Australia* Cooper_Union#The_Great_Hall, New York...

.