I like [MENTION=30438]Ralif Redhammer[/MENTION] 's suggestions.
But you can also go with any name. The name does not have to be related to what it does. It could be named after a hero or king who wielded it. It could be sentient and have it's own name.
Talos, Graken, Fury, Greybeard, White Blade, Dumarion, Stonewall...