Blunderbuss
The evolution from donder to blunder is thought by few to be done on purpose; the term blunder was originally used in a transitive sense, synonymous with to confuse, and this is thought to describe the stunningly loud sound of the large-bore, short-barreled blunderbuss. The term dragon is taken from detail of older models that were decorated with a carving in the shape of a dragon's head around the barrel; the muzzle blast would then give the impression of a fire-breathing dragon.