jack in

To stop doing a job or other activity that you have been doing regularly.

• I want to jack in my job.
• He jacked in his studies last year.
• Are you really going to jack it all in?

How to use it: jack something in (She jacked her job in and went travelling.)

Similar words: quit, give up, pack in

Opposites: continue

Common phrases: jack in something, jack in a job

To connect equipment to a device or system, often by putting a plug into a socket.

• Jack in the cable first.
• She jacked in to the network at her desk.
• Can this device jack in without an adapter?

How to use it: jack in to something (You can jack in to the network through this port.); jack something in (Jack the cable in before switching on the unit.)

Similar words: connect, plug in

Opposites: disconnect

Common phrases: jack in, jack in a cable

To link your brain directly to a computer, especially in science fiction.

• She jacked in through her brain implant.
• He jacks in to the computer to enter the simulation.
• Would you jack in if the system could read your thoughts?

How to use it: jack in to something (The hacker jacked in to the virtual world through a neural implant.)

Similar words: connect neurally

Common phrases: jack in, jack in to cyberspace