ballista

n. type of ancient weapon used to hurl stones, type of catapult

The ballista (Latin, from Greek ballistēs, from ballein 'to throw', plural ballistae) was a powerful ancient crossbow, although employing several loops of twisted skeins to power it, it used torsion (instead of a prod). Early versions ejected heavy darts or spherical stone projectiles of various sizes. It developed into a smaller sniper weapon, the Scorpio, and possibly the polybolos.
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Noun
1. medieval artillery used during sieges; a heavy war engine for hurling large stones and other missiles
(synonym) catapult, arbalest, arbalist, bricole, mangonel, onager, trebuchet, trebucket
(hypernym) artillery, heavy weapon, gun, ordnance

adj. lying, false, deceitful

(n.)
An ancient military engine, in the form of a crossbow, used for hurling large missiles.