köken: Unclear; from Proto-Albanian *kertsula, possibly borrowed from Latin cercellus, circellus (“small ring, hoop”), ultimately borrowed from Ancient Greek κίρκος (kírkos, “ring”). Doublet of qark, qarkull. Alternatively inherited from Proto-Indo-European *ker-ḱ- or *kert- (“to turn, to bind”), or simply qerth + -ull.