Meaning of “PO” in the English Dictionary

"PO" in Business English

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POnoun [ C ]

uk us

written abbreviation for post office :

I took the cheque to my local PO.

MONEY written abbreviation for postal order :

If a crossed PO has a name printed, then it can only be paid into that person's account.

(Definition of “PO” from the Cambridge Business English Dictionary © Cambridge University Press)