Stockade

A line of stout posts or timbers set firmly in the earth in contact with each other (and usually with loopholes) to form a barrier, or defensive fortification.

An inclosure, or pen, made with posts and stakes.

To surround, fortify, or protect with a stockade.

surround with a stockade in order to fortify

fortification consisting of a fence made of a line of stout posts set firmly for defense