1. a short gun with a wide barrel that was used in past times
Usage: historical
2. a person who acts in a clumsy or thoughtless way
Usage: informal

Examples

• The pirate carried an old blunderbuss on his ship.
• Museum visitors can see a collection of antique blunderbusses from the 18th century.
• The wide barrel of a blunderbuss made it effective at close range.
• Don’t let that blunderbuss handle the delicate negotiations.
• He’s such a blunderbuss when it comes to social situations.
• The coach called him a blunderbuss after he fumbled the ball again.