Space primarily used for preparation and storage of food. A kitchen is a room or part of a room used for cooking and food preparation in a dwelling or in a commercial establishment.
The main functions of a kitchen are to store, prepare and cook food (and to complete related tasks such as dishwashing). For example, a large restaurant may have a huge walk-in refrigerator and a large commercial dishwasher machine.
The kitchens were divided based on the types of food prepared in them.  Few medieval kitchens survive as they were notoriously