Kitchen (noun)

1. A room or area in which food is prepared and cooked.
2. The staff or department in a restaurant responsible for preparing and cooking food.
3. The collection of tools, utensils, appliances, and other equipment used in cooking.

Origin:

Middle english: from old northern french cuisine, from latin coquina "cooking place", feminine of coquinus "cook", from coquere "to cook".

Examples:

1. She was in the kitchen cooking dinner.
2. The kitchen was a mess.
3. He worked in the kitchen of a restaurant.
4. The kitchen was fully equipped.
5. She decorated the kitchen in a rustic style.