Where does “lǽra” come from?

lǽra (Old Norse) comes from Old Saxon lērian, from Proto-West Germanic laiʀijan, from Proto-Germanic laizijaną, from Proto-Indo-European loyséyeti, from Proto-Indo-European leys — to trace; to track.

Ancestry of “lǽra”, step by step

StepLanguageWordMeaning
1Old Saxonlērianto teach
2Proto-West Germaniclaiʀijanto teach
3Proto-Germaniclaizijanąto teach
4Proto-Indo-Europeanloyséyeti—
5Proto-Indo-Europeanleysto trace; to track
Every word from Proto-Indo-European leys →Every word from Proto-Indo-European loyséyeti →Every word from Proto-Germanic laizijaną →