Where does “rāw” come from?

rāw (Old English) comes from Proto-Germanic raiwō, from Proto-Indo-European reyk- — to tear, scratch; streak; to carve, scratch, etch.

Ancestry of “rāw”, step by step

Step	Language	Word	Meaning
1	Proto-Germanic	raiwō	—
2	Proto-Indo-European	reyk-	to tear, scratch; streak; to carve, scratch, etch

rāw — Etymology, Origin & Word History | Etymology Explorer