This is a type of axe, widely used by the Vikings. It is a simple war axe. But it's chief innovation is the curvature on the between the bottom of the blade and the handle. This made the bearded axe an ideal weapon for disembowling your enemies. When you thrust your axe into your enemy's abdomen, the "bearded" portion of the axe would act like a hook, pulling out his entrails when you pulled your axe out of his bleeding body.