ATS Bible Dictionary
Corn In the Bible, is the general word for grain of all kinds, including various seeds, peas, and beans. It never means, as in America, simply maize, or Indian corn. Palestine was anciently very fertile in grain, which furnished in a great measure the support of the inhabitants. "Corn, wine, and oil-olive" were the staple products, and wheat and barley still grow there luxuriantly, when cultivated.
Wheat was often eaten in the field, the ripe ear being simply rubbed in the hands to separate the kernels, De 23:25Matthew 12:1. Parched wheat was a part of the ordinary food of the Israelites, as it still is of the Arabs,
Ruth 2:142 Samuel 17:28,29; by the feet of cattle, De 25:4; or by "a sharp threshing instrument having teeth,"
Isaiah 41:15, which was something resembling a cart, drawn over the corn by means of horses or oxen.