Where does “eşlik” come from?

eşlik (Turkish) comes from Turkish eş, from Proto-Turkic es — memory; mind.

eşlik (Turkish): accompaniment

Definitions

Step	Language	Word	Meaning
1	Turkish	eş	as, like, kind of; match, equal; spouse, husband,...
2	Proto-Turkic	es	memory; mind

eşlik — Etymology, Origin & Word History | Etymology Explorer