Where does “aulos” come from?

aulos (English) comes from Ancient Greek αὐλός, from Proto-Indo-European h₂ewlos — hollow; tube, hole.

aulos (English): Any of a class of ancient Greek musical...

Definitions

Step	Language	Word	Meaning
1	Ancient Greek	αὐλός	flute, clarinet, pipe; hollow tube, pipe, groove,...
2	Proto-Indo-European	h₂ewlos	hollow; tube, hole

aulos — Etymology, Origin & Word History | Etymology Explorer