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English definition of “PO”

PO

noun uk   /ˌpiːˈəʊ/ us    /-ˈoʊ/

PO noun (MAIL)

[S] abbreviation for the Post OfficeThe postal system

PO noun (ARMY)

written abbreviation for petty officer: PO McLintockRanks in the Navy
(Definition of PO from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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SMART Thesaurus: Ranks in the Navy

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