From Longman Dictionary of Contemporary EnglishPOPO British English, P.O. American English 1 TCMthe written abbreviation of post office → PO Box2 MONEY British English the written abbreviation of postal orderPo, thethe PoPo, the /pəʊ/ the largest river in northern ItalyFrom Longman Business DictionaryPOPO /ˌpiː ˈəʊ-ˈoʊ/ written abbreviation for POSTAL ORDER; POST OFFICE
