# letterbox

> English word · Noun · frequency rank #51,217

## Definitions
1. A box into which mail is put.
2. A box into which mail is put.
3. A hidden container that holds a logbook and rubber stamp, found by following clues as a form of recreation.
4. A rectangular hole or slot.

## Etymology
From letter + box.

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