(Austral & NZ) the usual name for postal order
noun 1. any of the savings banks formerly operated by local post offices and limited to small accounts.
noun, Chiefly British. 1. . noun 1. a written order for the payment of a sum of money, to a named payee, obtainable and payable at a post office
noun, Philately. 1. an envelope, postal card, wrapper, or aérogramme, with the stamp printed directly on the paper.
noun 1. a railroad car for transporting unsorted mail.