Where does “ᡩᡠᡳᠨ” come from?

ᡩᡠᡳᠨ (Manchu) comes from Jurchen duwin, from Proto-Tungusic *dügin.

Ancestry of “ᡩᡠᡳᠨ”, step by step

Step	Language	Word	Meaning
1	Jurchen	duwin	four (4)
2	Proto-Tungusic	*dügin	—

Words derived from “ᡩᡠᡳᠨ”

Every word from Proto-Tungusic *dügin →Every word from Jurchen duwin →