jack in


Also found in: Dictionary, Thesaurus, Idioms.

jack in

To log on to a machine or connect to a network or BBS, especially for purposes of entering a virtual reality simulation such as a MUD or IRC (leaving is "jacking out"). This term derives from cyberpunk SF, in which it was used for the act of plugging an electrode set into neural sockets in order to interface the brain directly to a virtual reality. It is primarily used by MUD and IRC fans and younger hackers on BBS systems.
References in periodicals archive ?
When it comes to shakes, our guests tend to favor indulgent flavors with branded mix-ins, like pieces of Oreo[R] cookies," said Tracy Dunn, director of menu marketing and promotions for Jack in the Box Inc.
NASDAQ:JACK), based in San Diego, is a restaurant company that operates and franchises Jack in the Box[R] restaurants, one of the nation's largest hamburger chains, with more than 2,200 restaurants in 20 states.