Verses with the word sling in the Apocrypha (3 verses):

Judith 6:12
And when the men of the city saw them, they took up their weapons, and went out of the city to the top of the hill: and every man that used a sling kept them from coming up by casting of stones against them.

Judith 9:7
For, behold, the Assyrians are multiplied in their power; they are exalted with horse and man; they glory in the strength of their footmen; they trust in shield, and spear, and bow, and sling; and know not that thou art the Lord that breakest the battles: the Lord is thy name.

Sirach 47:4
Slew he not a giant, when he was yet but young? and did he not take away reproach from the people, when he lifted up his hand with the stone in the sling, and beat down the boasting of Goliath?