What is the meaning of Commissary?

A store primarily serving persons in an institution, most often soldiers or prisoners.

An account which a prisoner uses to buy provisions, or the balance of that account.

A cafeteria at a movie studio.

One to whom is committed some charge, duty, or office, by a superior power; a commissioner.

An officer of the bishop, who exercises ecclesiastical jurisdiction in parts of the diocese at a distance from the residence of the bishop.

An officer who supplies provisions to an army.

The judge in a commissary court.

A higher-ranking police officer.

Source: wiktionary.org