Where does “دنك” come from?

دنك (Ottoman Turkish) comes from Old Turkic teŋ, from Middle Chinese 等.

Ancestry of “دنك”, step by step

Step	Language	Word	Meaning
1	Old Turkic	teŋ	equivalent, balanced; equal, equivalent,...
2	Middle Chinese	等	—

دنك — Etymology, Origin & Word History | Etymology Explorer