'Walls' in the Bible

So I went out at night by the Valley Gate toward the Dragon’s Well and to the Refuse Gate and inspected the walls of Jerusalem which were broken down and its gates which were consumed by fire.

But when Sanballat, Tobiah, the Arabs, the Ammonites, and the Ashdodites heard that the repair of the walls of Jerusalem went on, and that the breaches were being closed, they were very angry.