2.American EnglishAmEPM a shop that supplies food and other goods in a militarycamp 军营商店
3.American EnglishAmEDFTBB a place where you can eat in a large organization such as a filmstudio, factory etc 〔电影制片厂、工厂等的〕餐厅,食堂
Examples from the Corpus
commissary• The salads and sandwiches are prepared at a centralcommissary.• A special commissary, Egidius, was sent by the pope to keep an eye on Conrad.• As he wrote the commissary in 1752, he had no ambition to Presbyterianize the colony.
Origincommissary
(1300-1400)Medieval Latincommissarius, from Latincommissus; → COMMISSION1