Bo/Origin

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Origin
A crossbow is a weapon consisting of a bow mounted on a stock that shoots projectiles, often called bolts or quarrels. The medieval crossbow was called by many names, most of which derived from the word ballista, a torsion engine resembling a crossbow in appearance. Historically, crossbows played a significant role in the warfare of East Asia, Europe and the Mediterranean. Today, they are used primarily for shooting sports, hunting, and when shooting in silence is an important consideration.