Where does “iugher” come from?

iugher (Old Danish) comes from Old Norse [[júr]], [[júgr]], from Proto-Indo-European h₁ówHdʰr̥ — udder.

Ancestry of “iugher”, step by step

Step	Language	Word	Meaning
1	Old Norse	[[júr]], [[júgr]]	—
2	Proto-Indo-European	h₁ówHdʰr̥	udder

iugher — Etymology, Origin & Word History | Etymology Explorer