'Wall' in the Bible

and he shall sprinkle of the blood of the sin-offering on the wall of the altar; and the rest of the blood shall be wrung out at the bottom of the altar: it is a sin-offering.

And when he looketh on the plague, and behold, the plague is in the walls of the house, greenish or reddish hollows, and their look is deeper than the surface of the wall,

But the houses in villages that have no wall round about them shall be reckoned as the fields of the country: they may be redeemed, and they shall go out in the jubilee.