or Luez .The indestructible bone; the nucleus of the resurrection body.
“`How doth a man revive again in the world to come?' asked Hadrian; and Joshua Ben Hananiah made answer. `From luz in the backbone.' He then went on to demonstrate this to him: He took the bone luz, and put it into water, but the water had no action on it; he put it in the fire, but the fire consumed it not; he placed it in a mill, but could not grind it; and laid it on an anvil, but the bammer crushed it not.” —Lightfoot.
The learnéd rabbins of the Jews Write there's a bone, which they call luez ...