An engine somewhat resembling a massive crossbow, used by the ancient Greeks and Romans for throwing stones, arrows, spears, etc., A forked stick with elastic band for throwing small stones, etc.
catapult
you make a catapult!
Catapult is a noun.
A Trebuchet Catapult
where was the catapult used
how did you incresed the accuacy of your catapult
They used the catapult for war.
A mangonel is a kind of catapult.
A mangonel is a catapult, not a bridge.
Who invented the rocket Catapult
Another work for catapult is trebuchet.
catapult ammo can be anything from cows, to boulders.