Where does “лётнік” come from?

лётнік (Belarusian) comes from Polish lotnik, from Polish lot, from French Lot, from Middle French lot, from Old French loz, from Frankish lot, from Proto-Germanic hlutą, from Proto-Indo-European ḱlew- — to cover; to incline.

лётнік (Belarusian): aviator, airman, pilot

Definitions

aviator, airman, pilot

Ancestry of “лётнік”, step by step

Step	Language	Word	Meaning
1	Polish	lotnik	flyer, aviator
2	Polish	lot	flight
3	French	Lot	share (of inheritance)
4	Middle French	lot	—
5	Old French	loz	—
6	Frankish	lot	—
7	Proto-Germanic	hlutą	lot, share; fate
8	Proto-Indo-European	ḱlew-	to hear
9	Proto-Indo-European	ḱel-	to cover; to incline

Every word from Proto-Indo-European ḱel- →Every word from Proto-Indo-European ḱlew- →Every word from Proto-Germanic hlutą →