post-office box number

/poʊst bɑks ˌnʌmbər/
IPA guide

Definitions of post-office box number
  1. noun
    the number of a letter box at the post office where mail is collected
    synonyms: PO Box No, PO box number, box number
    see moresee less
    type of:
    mailing address
    the address where a person or organization can be communicated with
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