Phrase guide

PO box

noun · 3 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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No pronunciation record was provided for this word.

1

noun

Meaning 1

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

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

Alternative letter-case form of PO box.

Definition source: English Wiktionary via Wiktextract

Usage: alt-of

Examples

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

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

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

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: Post-Office box, POB, call box, letter box

Antonyms: none provided

Broader terms: compartment

History

Etymology

No etymology was provided for this word.