JACK n.
rop (Sedum acre). -- Jack-of-the-clock, a figure, usually of a man, on old clocks, which struck the time on the bell. -- Jack-on-both-sides, one who is or tries to be neutral. -- Jack-out-of-office, one who has been in office and is turned out. Shak. -- Jack the Giant Killer, the hero of a well-known nursery story.…
KNUCKLE n.
ith points, worn to protect the hand, to add force to a blow, and to disfigure the person struck; as, brass knuckles; -- called also knuckle duster. [Slang.] Knuckle joint (Mach.), a hinge joint, in which a projection with an eye, on one piece, enters a jaw between two corresponding projections with eyes, on another pi…