We don't have synonyms for jack in yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are pack in, jack it and jacklin.
(v) :
(music recording, computing, electronics) To insert an electronic coupling into a receptacle; to connect to something, whether involving a physical medium or not.
(v) :
(science fiction, ambitransitive) To connect a brain directly to a computer.
(v) :
(transitive, idiomatic, British) To stop doing a regular activity, such as a job or studying.
(v) :
(music recording, computing, electronics) To insert an electronic coupling into a receptacle; to connect to something, whether involving a physical medium or not.
(v) :
(science fiction, ambitransitive) To connect a brain directly to a computer.
(v) :
(transitive, idiomatic, British) To stop doing a regular activity, such as a job or studying.