Definition of PO box noun from the Oxford Advanced Learner's Dictionary


PO box

BrE BrE//ˈpiː əʊ bɒks//
; NAmE NAmE//ˈpiː oʊ bɑːks//
(also post office box)
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used as a kind of address, so that mail can be sent to a post office where it is kept until it is collected Radio Netherlands, PO box 222, Hilversum
See the Oxford Advanced American Dictionary entry: PO box