A Mini Catapult, Used by David to Kill Goliath
Puzzle 1 of Classic Things Medium Pack
Question is: A Mini Catapult, Used by David to Kill Goliath
and the answer is: SLINGSHOT
Word Meaning:
SLINGSHOT — (chiefly US, Australia, Philippines) A Y-shaped stick with an elastic sling between the arms used for shooting small projectiles.
Definitions from Wiktionary.