'Saws' in the Bible

He also brought out the people who [were] in it and put them to the saws and to the iron picks and to the iron axes, and he sent them to the place of the brickmakers. Thus he used to do to all the cities of the {Ammonites}, and he and all of the army returned to Jerusalem.

And the people who [were] in it he brought out, and {he set them to work with saws and iron implements and axes}. Thus David did to all the cities of the {Ammonites}. Then David returned, and all the nation [went] with him.