A person's "jack" is the slang for "friends at high places" in the part of the world where I belong to.
Thank you.
Edit: I split the long question as I was asked to.
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Sign up to join this communityA person's "jack" is the slang for "friends at high places" in the part of the world where I belong to.
Thank you.
Edit: I split the long question as I was asked to.
"Connected". As in: "He's connected; he can get anything you need, no matter how illegal." This could also be phrased as "he has connections". Just as an alternative for Brian Hooper's suggestion of Pull (which might fit your needs better).
Pull might be a suitable word for this; a bit less slangy than jack; meaning (6):-
Slang A means of gaining special advantage; influence: The lobbyist has pull with the senator.