Where does “leger” come from?

leger (Middle Dutch) comes from Old Dutch *leger, from Old Norse legr, from Proto-Germanic legrą, from Proto-Indo-European legʰ- — to lie.

Ancestry of “leger”, step by step

Step	Language	Word	Meaning
1	Old Dutch	*leger	—
2	Old Norse	legr	—
3	Proto-Germanic	legrą	a lying, a place where one lies; camp
4	Proto-Indo-European	legʰ-	to lie