From Longman Business Dictionarycredit unionˈcredit ˌunion [countable] especially American EnglishFINANCEORGANIZATIONS an organization formed by a group of people working for the same company who save money together so that members can borrow at lower interest rates than at banksSYNcredit society BrEan unofficial credit union where people group together to help each other with major purchases → union