Where does “leder” come from?

leder (Middle Dutch) comes from Old Dutch lether, from Proto-Germanic leþrą, from Proto-Celtic ɸlitro-, from Proto-Indo-European pl̥tro-.

Ancestry of “leder”, step by step

Step	Language	Word	Meaning
1	Old Dutch	lether	—
2	Proto-Germanic	leþrą	leather
3	Proto-Celtic	ɸlitro-	—
4	Proto-Indo-European	pl̥tro-	—

leder — Etymology, Origin & Word History | Etymology Explorer