Where does “зина” come from?

зина (Bulgarian) comes from Proto-Slavic zinǫti, from Proto-Indo-European ǵʰinéh₁-, from Proto-Indo-European ǵʰeh₁y-, from Proto-Indo-European ǵʰih₁-.

зина (Bulgarian): to open one's mouth, to gape, to open wide to open the mouth wide, especially from surprise, fear, hunger, or in order to speak

Definitions

to open one's mouth, to gape, to open wide to open the mouth wide, especially from surprise, fear, hunger, or in order to speak

Ancestry of “зина”, step by step

Step	Language	Word	Meaning
1	Proto-Slavic	zinǫti	to gape, to open
2	Proto-Indo-European	ǵʰinéh₁-	—
3	Proto-Indo-European	ǵʰeh₁y-	to yawn, gape; to gape, be wide open; to gape,...
4	Proto-Indo-European	ǵʰih₁-	—

Every word from Proto-Indo-European ǵʰih₁- →Every word from Proto-Indo-European ǵʰeh₁y- →Every word from Proto-Indo-European ǵʰinéh₁- →