'Edge' in the Bible

And the cows took the straight way, by the road to Beth-shemesh; they went by the highway, not turning to the right or to the left, and the sound of their voices was clear on the road; and the lords of the Philistines went after them as far as the edge of Beth-shemesh.

For they had instruments for putting an edge on their ploughs and blades and forks and axes, and for putting iron points on their ox-driving rods.