ar·ba·list /ˈɑrbəlɪst/
  [中世紀鋼制的] 大弓
  Ar·ba·lest Ar·ba·list n.  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.]
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  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]