Hamr: A shape assumed by a shapeshifter (other than the human form). The term references language resources based out of Northern and Western Europe.
Hamrammir: the shapeshifters.
at hamz: the actual process of transformation.
Hamfarir: traveling in the assumed beast’s shape.
Hamremmi: supernatural strength the person acquires through transformation into a beast.
Puns about hammers and ham are just dancing through my head--I'll spare you, though. ;-)