Where does “*ā́ˀbōl” come from?

*ā́ˀbōl (Proto-Balto-Slavic) comes from Proto-Indo-European h₂ébōl — apple.

Ancestry of “*ā́ˀbōl”, step by step

Step	Language	Word	Meaning
1	Proto-Indo-European	h₂ébōl	apple