Heb. hishalon i.e., "invention" (as in Eccl 7:29 ) contrivances indicating ingenuity. In 2 Chronicles 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).
Heb. mechi kobollo, i.e., the beating of that which is in front a battering-ram ( Ezekiel 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 Samuel 20:15 ).
These dictionary topics are from M.G. Easton M.A., D.D., Illustrated Bible Dictionary, Third Edition, published by Thomas Nelson, 1897. Public Domain, copy freely.
Bibliography InformationEaston, Matthew George. "Entry for Engines". "Easton's Bible Dictionary". .