Understand blunderbuss as an antique firearm, mostly in historical or fantasy contexts. In the museum, they displayed a blunderbuss from the 18th century.
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Visual Impact
A blunderbuss looks distinctive with its flared barrel; often depicted in pirate stories. The bandit's blunderbuss looked imposing despite its rusty condition.
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Metaphoric Use
The word may be used metaphorically to describe something broad and unsubtle. His arguments were like a blunderbuss: loud and lacking precision.