Ballista

A ballista is a siege weapon used to launch projectiles. 
==Description==
The technical meaning of a ballista is a crossbow powered by torsion as opposed to a tension. What this means is that a ballista is based on the rotational movement of a spring, as opposed to the release of a tight string. Ballistae ranged from small, handheld crossbows to larger catapults which could break down walls. 
==External links==
Category:Ranged Weapons