Definition of post office box in English:

post office box

Line breaks: post of¦fice box
(also PO box)


  • A numbered box in a post office assigned to a person or organization, where letters for them are kept until called for.
    More example sentences
    • Beware of promoters who are not locally based, provide no telephone number and who use a post office box or mail drop rather than a full street address.
    • I wrote back and I also wrote to her headmaster, whose name appeared on the school letterhead, at a PO box.
    • I also stopped past my new post office box on Wednesday, which was christened with its first letter.

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