'Mill' in the Bible

and all the firstborn in the land of Egypt shall die, from the firstborn of Pharaoh who sits on his throne, even to the firstborn of the female servant who is behind the mill; and all the firstborn of livestock.

No man shall take the mill or the upper millstone to pledge; for he takes [a man's] life to pledge.

The Philistines laid hold on him, and put out his eyes; and they brought him down to Gaza, and bound him with fetters of brass; and he ground at the mill in the prison.

The young men bare the mill; The children stumbled under the wood.