Where does “единоборство” come from?

единоборство (Russian) comes from Russian -боро́ть, from Proto-Slavic bòrti, from Norwegian Nynorsk i, from Latin I, from Etruscan 𐌉, from Ancient Greek Ι, from Phoenician 𐤉, from Egyptian 𓂝.

единоборство (Russian): (single) combat, duel

Definitions

(single) combat, duel

Ancestry of “единоборство”, step by step

Step	Language	Word	Meaning
1	Russian	-боро́ть	—
2	Proto-Slavic	bòrti	to fight (transitive)
3	Norwegian Nynorsk	i	in, inside of; for, in, during; in
4	Latin	I	i
5	Etruscan	𐌉	—
6	Ancient Greek	Ι	The number one in Greek numerals resp. Attic...
7	Phoenician	𐤉	yod; yodh
8	Egyptian	𓂝	—

Every word from Egyptian 𓂝 →Every word from Phoenician 𐤉 →Every word from Ancient Greek Ι →