B is for Blunderbuss
Sounds like it could be the name of a Dickensian ruffian, or maybe a steampunk supervillain, but actually, of course, a type of gun. A blunderbuss is something like a shotgun, but with a flared muzzle through which it is loaded. Not a subtle weapon. Its name comes from the Dutch donderbus, meaning "thunder pipe", which probably gives some idea of how one sounds when fired.
There are also pistol-sized blunderbusses called dragons. One day I have to write a story in which the characters race around firing blunderbusses and dragons ...