'Ground' in the Bible

He was with David at Pas-dammim, where the Philistines were gathered together to battle; and there was there a plot of ground full of barley; and the people had fled from before the Philistines.

And David came to Ornan, and Ornan looked and saw David, and went out of the threshing-floor, and bowed himself to David with his face to the ground.

And over them that worked in the field for tillage of the ground was Ezri the son of Chelub.