Where does “hira” come from?

hira (Bikol Central) comes from Spanish girar, from Latin gȳrō, from Latin gȳrus, from Ancient Greek γῦρος, from Ancient Greek μίτρα, from Proto-Indo-European mey- — to strengthen; to bind; to change, exchange.

Ancestry of “hira”, step by step

Step	Language	Word	Meaning
1	Spanish	girar	to turn, to pivot; to spin, to rotate, to...
2	Latin	gȳrō	to turn in a circle, wheel around, rotate
3	Latin	gȳrus	circle
4	Ancient Greek	γῦρος	ring, circle
5	Ancient Greek	μίτρα	A metal guard worn round the waist; A maiden's...
6	Proto-Indo-European	mey-	to strengthen; to bind; to change, exchange

Every word from Proto-Indo-European mey- →Every word from Ancient Greek μίτρα →Every word from Ancient Greek γῦρος →