[com.mis.sary] n, pl -sar.ies [ME commissarie, fr. ML commissarius, fr. L commissus, pp. of committere] (14c) 1: one delegated by a superior to execute a duty or an office
2. a: a store for equipment and provisions; esp: a supermarket operated for military personnel b: food supplies c: a lunchroom esp. in a motion-picture studio