# brainbox

> English word · Noun · IPA /ˈbɹeɪn(ˌ)bɒks/

## Definitions
1. The cavity of the skull in which the brain is contained.
2. The skull; the head.
3. A very intelligent person.

## Etymology
From brain + box.

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