commissary

Short definition from Wiktionary

Noun

1. 1
   A store primarily serving persons in an institution, most often soldiers or prisoners.
2. 2
   An account which a prisoner uses to buy provisions, or the balance of that account.
3. 3
   A cafeteria at a television or movie studio.
4. 4
   One to whom is committed some charge, duty, or office, by a superior power; a commissioner.
5. 5
   An officer of the bishop, who exercises ecclesiastical jurisdiction in parts of the diocese at a distance from the residence of the bishop.
6. 6
   An officer who supplies provisions to an army.
7. 7
   The judge in a commissary court.
8. 8
   A higher-ranking police officer.