'Wall' in the Bible

Then the angel of the Lord stood in a narrow path of the vineyards, with a wall on this side and a wall on that side.

When the donkey saw the angel of the Lord, she pressed herself to the wall and pressed Balaam’s foot against the wall, so he struck her again.

“The pasture lands of the cities which you shall give to the Levites shall extend from the wall of the city outward a thousand cubits around.