Where does “filu” come from?

filu (Asturian) comes from Latin fīlum, from Proto-Italic fī(s)lom, from Proto-Indo-European gʷʰiH-(s-)lo-.

filu (Asturian): string; thread

Definitions

Step	Language	Word	Meaning
1	Latin	fīlum	—
2	Proto-Italic	fī(s)lom	—
3	Proto-Indo-European	gʷʰiH-(s-)lo-	—

filu — Etymology, Origin & Word History | Etymology Explorer