A butler is a person who works in a house serving and is a domestic worker in a large household. In great houses, the household is sometimes divided into departments with the butler in charge of the dining room, wine cellar, and pantry. 

Professional butler duties often vary and may include but are not limited to managerial responsibilities, keeping accounts, and maintaining the wardrobe for the members of the house. They will be well versed in etiquette and serving and have thorough understanding of formal home care. They will have attended butler school and may hold a certificate in wine specialization. It is not uncommon for a butler to hold a degree in the Culinary Arts and, in many cases, speak several languages.