Akademik

postal order
postal order ˈpostal ˌorder written abbreviation PO noun [countable]
a document bought at a post office which can be sent through the post and exchanged for money:

• Send a cheque or postal order for £13.99 to the address below.

— compare money order

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postal order UK US noun [C] (UK MONEY
► MONEY ORDER(Cf. ↑money order)

Financial and business terms. 2012.