'Sling' in the Bible

He took his stick in his hand and chose for himself five smooth stones from the brook, and put them in the shepherd’s bag which he had, even in his pouch, and his sling was in his hand; and he approached the Philistine.

Thus David prevailed over the Philistine with a sling and a stone, and he struck the Philistine and killed him; but there was no sword in David’s hand.

Should anyone rise up to pursue you and to seek your life, then the life of my lord shall be bound in the bundle of the living with the Lord your God; but the lives of your enemies He will sling out as from the hollow of a sling.