commissary

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A supermarket for military personnel and their dependents, usually located on a military installation.
• noun A store where food and equipment are sold, as in a mining camp.
• noun A lunchroom or cafeteria, especially one in a film or television studio.
• noun A person to whom a special duty is given by a higher authority; a deputy.

from The Century Dictionary.

• noun In a general sense, one to whom some charge, duty, or office is committed by a superior power; one who is sent or delegated to execute some office or duty in the place, or as the representative, of his superior; a commissioner.
• noun Eccles., an officer who by delegation from the bishop exercises spiritual jurisdiction in remote parts of a diocese, or is intrusted with the performance of the bishop's duties in his absence.
• noun In Scots law, the judge in a commissary-court; in present practice, the sheriff of each county acting in the commissary-court. See commissary-court.
• noun Milit., a name given to officers or officials of various grades, especially to officers of the commissariat department.
• noun [F. commissaire de police.] A superior officer of police in France.
• noun A general store for supplying workmen in any large industry.

from the GNU version of the Collaborative International Dictionary of English.

• noun One to whom is committed some charge, duty, or office, by a superior power; a commissioner.
• noun (Eccl.) An officer of the bishop, who exercises ecclesiastical jurisdiction in parts of the diocese at a distance from the residence of the bishop.
• noun United States, United States An officer having charge of a special service.
• noun United States An officer whose business is to provide food for a body of troops or a military post; -- officially called commissary of subsistence.
• noun [Eng.], [U. S.] The commissary general of subsistence.
• noun (Mil. U. S.) the head of the subsistence department, who has charge of the purchase and issue of provisions for the army.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A store primarily serving soldiers.
• noun A cafeteria at a movie studio.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a snack bar in a film studio
• noun a retail store that sells equipment and provisions (usually to military personnel)