Palisade
PALISA'DE, noun A fence or fortification consisting of a row of stakes or posts sharpened and set firmly in the ground. In fortification, the posts are set two or three inches apart, parallel to the parapet in the covered way, to prevent a surprise.
Palisades serve also to fortify the avenues of open forts, gorges, half-moons, the bottom of ditches, etc.
PALISA'DE, verb transitive To surround, inclose or fortify with stakes or posts.