Where does “laukur” come from?

laukur (Icelandic) comes from Old Norse laukr, from Proto-Norse ᛚᚨᚢᚲᚨᛉ, from Proto-Germanic laukaz, from Proto-Indo-European lewg- — to bend.

laukur (Icelandic): onion, leek, garlic; a bulb; the best of...