# think tank

> English word · Noun · IPA /ˈθɪŋk ˌtæŋk/

## Definitions
1. A group of people who collectively perform research and develop reports and recommendations on topics relating to strategic planning or public policy, and which is usually funded by corporate, government, or special interests.
2. The brain.

## Etymology
From the use of think tank or think box in the 19th century to refer to the human brain.

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