palisade >> ˌpalɪˈseɪd
Definition: [noun] a fence of wooden stakes or iron railings fixed in the ground, forming an enclosure or defence.
Example: at this time fortifications consisted mainly of earth banks and wooden palisades
Definition: [noun] a line of high cliffs.
Definition: [verb] enclose or provide (a building or place) with a palisade.
Example: he palisaded the ends of the streets, and made the town a roughly fortified camp