资料来源 : pyDict

石弓,弩

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Crossbow \Cross"bow`\ (-b?`), n. (Archery)
   A weapon, used in discharging arrows, formed by placing a bow
   crosswise on a stock.

资料来源 : WordNet®

crossbow
     n : a bow fixed transversely on a wooden stock grooved to direct
         the arrow (quarrel)