German wälzen

← Middle High German welzen (inherited)

← Proto-West Germanic *waltijan (inherited)

← Old High German welzen (inherited)

→ English welter (cognate)

→ English walt (cognate)

→ English welt (cognate)

→ Danish vælte (cognate)

→ German umwälzen (prefix)

→ German Steinwälzer (compound)