[χάραξ] from χαράσσω (to sharpen to a point; akin to G1125 through the idea of scratching); a stake, i.e. (by implication) a palisade or rampart (military mound for circumvallation in a siege)
Usages throughout the bible
Luke 19:43
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For the days shall come upon thee, that thine enemies shall cast a trench G5482 about thee, and compass thee round, and keep thee in on every side,