JACK n. 2 definitions
c press, or any simple combination of mechanical powers, working in a compact pedestal or support and operated by a lever, crank, capstan bar, etc. The name is often given to a jackscrew, which is a kind of jack.
JOINT n.
r, having a nut embedded in one of the pieces. -- Joint chair (Railroad), the chair that supports the ends of abutting rails. -- Joint coupling, a universal joint for coupling shafting. See under Universal. -- Joint hinge, a hinge having long leaves; a strap hinge. -- Joint splice, a reënforce at a joint, to sustai…
JUSTIFICATION n.
proving to be just or conformable to law, justice, right, or duty; defense; vindication; support; as, arguments in justification of the prisoner's conduct; his disobedience admits justification. I hope, for my brother's justification, he wrote this but as an essay or taste of my virtue. Shak.