'Slings' in the Bible

They destroyed the cities, and each of them threw stones to cover every good piece of land. They stopped up every spring of water and cut down every good tree. In the end, only the buildings of Kir-hareseth were left. Then men with slings surrounded the city and attacked it.

And Uzziah prepared for them throughout all the host shields, and spears, and helmets, and habergeons, and bows, and slings to cast stones.