# post office box

> English word · Noun

## Definitions
1. A uniquely addressable lockable box located on the premises of a post office that may be hired as collection point for mail.
2. A test instrument once used by telephone engineers.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/post-office-box