Where does “облегать” come from?

облегать (Russian) comes from Russian обле́чь, from Russian лечь, from Old East Slavic лечи, from Proto-Slavic leťi, from Proto-Balto-Slavic legtei, from Indo-European *légʰeti, from Indo-European legʰ-.

облегать (Russian): to cover; to fit tightly, to cling

Definitions

to cover; to fit tightly, to cling

Ancestry of “облегать”, step by step

Step	Language	Word	Meaning
1	Russian	обле́чь	to cover
2	Russian	лечь	to lie down; to fall, to cover; to flow
3	Old East Slavic	лечи	—
4	Proto-Slavic	leťi	to lie, lie down
5	Proto-Balto-Slavic	legtei	to lie (be in a resting position), lie down
6	Indo-European	*légʰeti	—
7	Indo-European	legʰ-	—

Every word from Indo-European legʰ- →Every word from Indo-European *légʰeti →Every word from Proto-Balto-Slavic legtei →