# jack in

> English word · Verb

## Definitions
1. To stop doing a regular activity, such as a job or studying.
2. To insert an electronic coupling into a receptacle; to connect to something, whether involving a physical medium or not.
3. To connect a brain directly to a computer.

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