BATTLEMENTS

On the roofs of houses
When thou buildest a new house, then thou shalt make a battlement for thy roof, that thou bring not blood upon thine house, if any man fall from thence. (Deuteronomy 22:8)
On the walls
Go ye up upon her walls, and destroy; but make not a full end: take away her battlements; for they are not the Lord's. (Jeremiah 5:10)