'Fortified City' in the Bible

And ye shall smite every fortified city, and every choice city, and shall fell every good tree, and stop all wells of water, and mar every good piece of land with stones.

And now, when this letter comes to you, seeing your master's sons are with you, and there are with you chariots, and horses, and a fortified city, and armour,

And the children of Israel did secretly against Jehovah their God things that were not right; and they built them high places in all their cities, from the watchmen's tower to the fortified city.

He smote the Philistines unto Gazah and its borders, from the watchmen's tower to the fortified city.