'Sling' in the Bible

He took his staff in his hand, and chose for himself five smooth stones out of the brook, and put them in the shepherd's bag which he had, even in his wallet. His sling was in his hand; and he drew near to the Philistine.

So David prevailed over the Philistine with a sling and with a stone, and struck the Philistine, and killed him; but there was no sword in the hand of David.

Though men may rise up to pursue you, and to seek your soul, yet the soul of my lord shall be bound in the bundle of life with Yahweh your God. He will sling out the souls of your enemies, as from the hollow of a sling.