The story
- Proto-Indo-European*peh₂-
- Proto-Indo-European*peh₂s-?
- Proto-Italic*pāstnis
- Latinpastillus
- Ancient Greekπάστιλλος (pástillos)
- Armenianպաստեղ (pasteł)
- English todaypastegh
Borrowed from Armenian պաստեղ (pasteł), from Middle Armenian պաստեղ (pasteł), from Old Armenian *պաստեղ (*pasteł), borrowed from Ancient Greek πάστιλλος (pástillos), borrowed from Latin pastillus (“pastille”), from Archaic Latin *pāstin-los, from *pāstṇlos, from *pāstn-elos, from Proto-Italic *pāstnis + *-elos. Doublet of pastel, pastiglia, pastila, pastilla, and pastille.
Etymology from Wiktionary, CC BY-SA 4.0.