Where does “Léier” come from?

Léier (Luxembourgish) comes from Old High German lēra, from Proto-West Germanic laiʀu, from Proto-Germanic laizō, from Proto-Germanic laizijaną, from Proto-Indo-European loyséyeti, from Proto-Indo-European leys — to trace; to track.

Léier (Luxembourgish): apprenticeship; lesson

Definitions

apprenticeship; lesson

Ancestry of “Léier”, step by step

Léier traces back through two separate lines of ancestry.

via Old High German lēra

Step	Language	Word	Meaning
1	Old High German	lēra	teaching, lore
2	Proto-West Germanic	laiʀu	—
3	Proto-Germanic	laizō	teaching; lore; doctrine
4	Proto-Germanic	laizijaną	to teach
5	Proto-Indo-European	loyséyeti	—
6	Proto-Indo-European	leys	to trace; to track

via Middle High German līre

Step	Language	Word	Meaning
1	Middle High German	līre	—
2	Old High German	līra	—
3	Latin	Lyra	lyre, lute
4	Ancient Greek	λύρα	lyre, string instrument with a sounding board...

Every word from Proto-Indo-European leys →Every word from Proto-Indo-European loyséyeti →Every word from Proto-Germanic laizijaną →