Yup, any weapon can be blocked with bare hands. You don't need to block the dangerous bit (in fact, that's downright silly), but like the Pope suggests, you can block an axe haft. Or, in the case of swords, you can block the arms. That's the way it's done in fist fighting, as well: if someone throws a hook at you, it's much easier to stop the punch at the shoulder or elbow than at the fist.