Ezekiel 26:9

And he shall set engines of war against thy walls
Which some Jewish writers understand of crossbows, out of which stones or arrows were cast; but rather, according to Kimchi and Jarchi, they were warlike machines, invented to throw large stones against the walls of a place, to beat them down. Some think they were the same with the battering rams, used in sieges for the demolishing of walls; which was a late invention of those times, Ezekiel being the first writer, it is said, that makes mention of them: and with his axes he shall break down thy towers;
the word here used signifies anything made of iron, as swords, spears, hammers, and axes; the latter, being more proper to demolish towers, is here pitched on by our translators. The Targum renders it, "with stones of iron"; that is, with iron balls cast out of their engines.