'Crack' in the Bible

And he made an attack on them, driving them in uncontrolled flight, and causing great destruction; then he went away to his safe place in the crack of the rock at Etam.

Then three thousand of the men of Judah went down to the crack of the rock of Etam, and said to Samson, Is it not clear to you that the Philistines are our rulers? What is this you have done to us? And he said to them, I only did to them as they did to me.

Then God made a crack in the hollow rock in Lehi and water came out of it; and after drinking, his spirit came back to him and he was strong again; so that place was named En-hakkore; it is in Lehi to this day.