'Fenced' in the Bible

Now Jericho [a fortified city with high walls] was tightly closed because [of the people’s fear] of the sons of Israel; no one went out or came in.

And it came to pass, when Joshua and the children of Israel had made an end of slaying them with a very great slaughter, till they were consumed, that the rest which remained of them entered into fenced cities.

Now therefore give me this mountain, whereof the LORD spake in that day; for thou heardest in that day how the Anakims were there, and that the cities were great and fenced: if so be the LORD will be with me, then I shall be able to drive them out, as the LORD said.

and the border hath turned back to Ramah, and unto the fenced city Tyre; and the border hath turned back to Hosah, and its outgoings are at the sea, from the coast to Achzib,

And the fenced cities are Ziddim, Zer, and Hammath, Rakkath, and Chinnereth,