Where does “wau” come from?

wau (English) comes from Ancient Greek ϝαῦ, from Phoenician 𐤅, from Egyptian 𓏲.

wau (English): digamma

Definitions

Step	Language	Word	Meaning
1	Ancient Greek	ϝαῦ	wau, an archaic letter Ϝ, ϝ of the Ancient Greek...
2	Phoenician	𐤅	waw; {{l\|en\|waw}}
3	Egyptian	𓏲	—

wau — Etymology, Origin & Word History | Etymology Explorer