(n.) An officer in a king's or a nobleman's household, whose principal business it is to take charge of the liquors, plate, etc.; the head servant in a large house.

MC attorney bailiff boy chamberlain chauffeur coachman croupier curator custodian driver emcee equerry factor gardener gentleman gillie guardian house steward houseboy housekeeper houseman landreeve librarian lord-in-waiting majordomo man manservant master of ceremonies proctor procurator seneschal steward valet valet de chambre