Where does “zīhan” come from?

zīhan (Old High German) comes from Proto-Germanic tīhaną, from Proto-Indo-European deyḱ- — to point out.

Ancestry of “zīhan”, step by step

Step	Language	Word	Meaning
1	Proto-Germanic	tīhaną	to show, point out; to blame, accuse
2	Proto-Indo-European	deyḱ-	to point out

zīhan — Etymology, Origin & Word History | Etymology Explorer