Where does “melkar” come from?

melkar (Ido) comes from Esperanto melki, from German melken, from Middle High German mëlken, from Old High German melchan, from Proto-Germanic melkaną, from Proto-Indo-European h₂melǵ- — to milk; milk.

melkar (Ido): to milk

Definitions

to milk

Ancestry of “melkar”, step by step

Step	Language	Word	Meaning
1	Esperanto	melki	to milk; to jerk off, masturbate
2	German	melken	to milk (a cow, goat etc.)
3	Middle High German	mëlken	—
4	Old High German	melchan	—
5	Proto-Germanic	melkaną	to milk
6	Proto-Indo-European	h₂melǵ-	to milk; milk

Every word from Proto-Indo-European h₂melǵ- →Every word from Proto-Germanic melkaną →Every word from Old High German melchan →