PO box

noun

A post office box; a lockable box hired from the postal authorities or a private company as a collection point for mail.

“See also: P.O. Box, Post Office Box”

Similar
Post-Office boxPOBcall boxletter box
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Meanings

PO box1

nounPO box (plural PO boxes)

plural PO boxes

  1. A post office box; a lockable box hired from the postal authorities or a private company as a collection point for mail.

PO Box2

nounPO Box (plural PO Boxes)

plural PO Boxes

  1. Alternative letter-case form of PO box.

    See also: P.O. Box, Post Office Box

Synonyms & antonyms

nouna numbered compartment in a post office where mail is put to be called for

Similar
Post-Office boxPOBcall boxletter box
Broader
compartment
Also see
call boxpost office box

Synonym sets from Open English WordNet, CC BY 4.0.

Cite this entry
APA

PO box. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/PO%20box

MLA

“PO box.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/PO%20box. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “PO box,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/PO%20box.

Source: PO box on Wiktionary, CC BY-SA 4.0.