'Threshing sledge' in the Bible

Araunah said to David, "Let my lord the king take and offer what [is] good in his eyes. Look, here [are] the cattle for the burnt offering and the threshing sledge and the yokes of the oxen for the firewood.

His under parts are sharp potsherds: he spreadeth a threshing-sledge upon the mire.

For dill is not threshed with threshing sledge, nor is a wheel of a utility cart {rolled} over cumin, but dill is beaten out with stick, and cumin with rod.

Look! I will make you into a new sharp threshing sledge, {with} sharp edges. You shall thresh and crush [the] mountains, and you shall make [the] hills like chaff.