Engines
    (1.) Heb. hishalon i.e., "invention" (as in Eccl. 7:29)
    contrivances indicating ingenuity. In 2 Chr. 26:15 it refers to
    inventions for the purpose of propelling missiles from the walls
    of a town, such as stones (the Roman balista) and arrows (the
    catapulta).

      (2.) Heb. mechi kobollo, i.e., the beating of that which is in
    front a battering-ram (Ezek. 26:9), the use of which was common
    among the Egyptians and the Assyrians. Such an engine is
    mentioned in the reign of David (2 Sam. 20:15).