'Threshing sledge' in the Bible

And the people which were in it he brought forth, and he will put at the saw and at the threshing-sledge of iron, and at axes of iron, and caused them to pass over through the brick-kiln: and thus he will do to all the cities of the sons of Ammon. And David will turn back, and all the people, to Jerusalem.

For the fennel flower shall not be beaten with the threshing sledge, and the wheel of a wagon shall not be turned about upon the cummin; for the fennel flower shall be beaten out with the rod and the cummin with the rod.

Behold, I set thee to a new cutting threshing sledge having mouths: thou thalt thresh the mountains, and beat small, and the hills thou shalt set as chaff.