Definition of "Catapult" :

noun: an engine that provided medieval artillery used during sieges; a heavy war engine for hurling large stones and other missiles

noun: a device that launches aircraft from a warship

noun: a plaything consisting of a Y-shaped stick with elastic between the arms; used to propel small stones

verb: hurl as if with a sling

verb: shoot forth or launch, as if from a catapult

"The enemy catapulted rocks towards the fort."