A passage of approach to the walls of a besieged city, like a deep ditch; the earth thrown up constituting a wall. The Redeemer, weeping over Jerusalem a few days before he was crucified under its walls, said, "The days shall come upon thee, that thine enemies shall cast a trench about thee, and compass thee round, and keep thee in on every side," Lu 19:43. The Romans fulfilled this prediction by enclosing the entire city of Jerusalem by a wall, that the Jews might neither escape nor be relieved from without. In 1Sa 26:5, "trench" appears to mean the circle formed by camp equipage. See CAMP.