1. (noun)catapult, arbalest, arbalist, ballista, bricole, mangonel, onager, trebuchet, trebucket an engine that provided medieval artillery used during sieges; a heavy war engine for hurlinglarge stones and other missiles
Definition of 'arbalist'
Webster Dictionary
1. (noun)arbalist a crossbow, consisting of a steel bow set in a shaft of wood, furnished with a string and a trigger, and a mechanical device for bending the bow. It served to throw arrows, darts, bullets, etc