subs. (circus).A rope.
1854. DICKENS, Hard Times, vi. Tight-JEFF or Slack-JEFF, it dont much signify; its only tight-rope and slack-rope.
Verb. (American printers).To gamble with quads, as with dice.
1888. American Humorist. He never set any type except in the rush of the last day, and then he would smouch all the poetry, and leave the rest to JEFF for the solid takes.