What's a 'blunderbuss'?

Increase your vocabulary and you’ll make your writing more precise. That's why I provide a word of the week. Today's word: blunderbuss

History of a Blunderbuss gun - Pirate rifles, muskets and other weapons

Lion's Head Blunderbuss Flintlock Wood and Metal Replica Pistol 16 Inc —

17 Facts About Blunderbuss

Blunderbuss, Call of Duty Wiki

Flintlock blunderbuss Collections Online - Museum of New Zealand Te Papa Tongarewa

Blunderbuss

Blunderbuss with Spring Bayonet (Black Powder) - Pirate Fashions

Bonhams : A Brass-Barrelled Flintlock Blunderbuss With Spring Bayonet

Blunderbuss - Wikipedia

A Blunderbuss from Aceh – Antiques by the Sea