Where does “*rank” come from?

*rank (Old High German) comes from Proto-Germanic wrankiz, from Proto-Indo-European wreng- — to turn.

Ancestry of “*rank”, step by step

Step	Language	Word	Meaning
1	Proto-Germanic	wrankiz	a turning, twisting; a turn, twisting
2	Proto-Indo-European	wreng-	to turn

*rank — Etymology, Origin & Word History | Etymology Explorer