engines

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).