Definition of "jack in" in English

Verb

1. To stop doing a regular activity, such as a job or studying.

   • I've had enough of working nights, so I'm going to jack in my job.
   • I'm going to jack my job in.

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.