A threshing instrument — This then was made like a sledge shod with iron, which was drawn by men or beasts, over the sheafs of corn, to bruise them, and tear the grain out of them. A wheel — A lower wheel than a cart wheel, but of the same form, upon which possibly the threshing instrument was drawn.
Related Commentaries of Isaiah 28:27
Isaiah 28:27
27 For the fitches are not threshed with a threshing instrument, neither is a cart wheel turned about upon the cummin; but the fitches are beaten out with a staff, and the cummin with a rod.