arbalest \ar"balest\, arbalist \ar"balist\, n. of. arbaleste,
   ll. arbalista, for l. arcuballista; arcus bow + ballista a
   military engine. see ballista. antiq.
   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. written also arbalet and arblast.
   --fosbroke.
   1913 webster arbalester
see also:
ballista arbalet arblast 

arbalist
     n : medieval artillery used during sieges; a heavy war engine
         for hurling large stones and other missiles syn: catapult,
          arbalest, ballista, bricole, mangonel, onager,
          trebuchet, trebucket
see also:
catapult arbalest ballista bricole mangonel onager 
trebuchet trebucket