Where does “Փայլածու” come from?

Փայլածու (Armenian) comes from Old Armenian Փայլածու, from Old Armenian փայլ, from Proto-Indo-European (s)pʰel- — to shine.

Ancestry of “Փայլածու”, step by step

Step	Language	Word	Meaning
1	Old Armenian	Փայլածու	—
2	Old Armenian	փայլ	shine, brilliance, lustre, glitter, splendour;...
3	Proto-Indo-European	(s)pʰel-	to shine

Փայլածու — Etymology, Origin & Word History | Etymology Explorer