| a department store operated under government supervision at an air base. Abbreviation: BX |
Base Exchange  (bās)  Abbr. BX A service mark used for general merchandise store services for government employees on a naval or air force base. This service mark, often lowercased, sometimes occurs in print with the meaning "a general merchandise store on a military base": "The products are distributed at Army and Air Force base exchanges" (Washington Post). |