Blunderbuss

Overview

The Blunderbuss is a muzzle-loading firearm with a short, large calibre barrel, which is flared at the muzzle. The term "blunderbuss" originates from the Dutch word "donderbus", which is a combination of donder, meaning "thunder", and buss, meaning "pipe" - the Thunderpipe. 
 
The blunderbuss was an early shotgun, and served similar roles. It was typically loaded with a number of lead balls, giving it a shotgun effect when shot. Blunderbusses were typically very short, with barrels under two feet (60 cm) in length, at a time when a typical musket barrel was over three feet (90 cm) long.
 

Dragon

A small handgun version of a blunderbuss called "Dragon" was also made. It is from this name the term dragoon evolved.
It was named dragon because the early version of these guns were decorated with a carving in the form of a mythical dragon's head around the muzzle, and the blast from the muzzle would give the impression of a fire breathing dragon. 

In Games

World of Warcraft Blunderbusses can be found and used as a ranged weapon by hunters, rogues and warriors in World of Warcraft. They use bullets as ammunition and often has a slower attack speed but more damage for each bullet.

Pirates, Vikings and Knights II The Captain in PVK2 is equipped with a blunderbuss, it is quite deadly at short range and can also be used with the Captain's special attack: the exploding shot. The Captain has to reload the gun after each shot, and he cant move meanwhile.