'Battlements' in the Bible

He made in Jerusalem engines, invented by skillful men, to be on the towers and on the battlements, with which to shoot arrows and great stones. His name spread far abroad; for he was marvelously helped, until he was strong.

a day of the trumpet and alarm, against the fortified cities, and against the high battlements.

I have cut off nations. Their battlements are desolate. I have made their streets waste, so that no one passes by. Their cities are destroyed, so that there is no man, so that there is no inhabitant.