The answer is:
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Palisade (n.) — A strong, long stake, one end of which is set firmly in the ground, and the other is sharpened; also, a fence formed of such stakes set in the ground as a means of defense.
Palisade (n.) — Any fence made of pales or sharp stakes.
Palisaded (imp. & p. p.) — of Palisade
Palisade (v. t.) — To surround, inclose, or fortify, with palisades.