Where does “ᬰᬹᬮ” come from?

ᬰᬹᬮ (Balinese) comes from Sanskrit शूल, from Proto-Indo-Aryan śúHlas, from Proto-Indo-Iranian ćúHlas, from Proto-Indo-European ḱúh₃-los, from Proto-Indo-European ḱeh₃- — to sharpen, whet; sharpen.

Ancestry of “ᬰᬹᬮ”, step by step

Step	Language	Word	Meaning
1	Sanskrit	शूल	any sharp instrument or pointed dart, lance,...
2	Proto-Indo-Aryan	śúHlas	—
3	Proto-Indo-Iranian	ćúHlas	—
4	Proto-Indo-European	ḱúh₃-los	—
5	Proto-Indo-European	ḱeh₃-	to sharpen, whet; sharpen

Every word from Proto-Indo-European ḱeh₃- →Every word from Proto-Indo-European ḱúh₃-los →Every word from Proto-Indo-Iranian ćúHlas →