/ ˈkɒmɪsəri; NAmE ˈkɑːmɪseri/ noun ( pl. -ies ) ( NAmE )
1.
a shop / store that sells food, etc. in a military base, a prison, etc.
2.
a restaurant for people working in a large organization, especially a film studio
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WORD ORIGIN
late Middle English : from medieval Latin commissarius person in charge, from Latin commiss- joined, entrusted, from the verb committere (in medieval Latin put into custody), from com- with + mittere put or send.