γόπα

• γώπα f (gópa)
• βούπα f (voúpa) (dialectal)^[1]
• βώπα f (vópa) (dialectal)^[1]
• γούπα f (goúpa) (dialectal)^[1]

From an unattested Medieval Greek *γῶπα (*gôpa), from an unattested *βῶπα (*bôpa), an accusative form of Byzantine Greek βῶψ (bôps), βόωψ (bóōps, “small fish (bogue)”), from Ancient Greek βῶξ (bôx), a contracted form of βόαξ (bóax, “bogue fish”).

The "cigarette butt" sense is in reference to the resemblance of cigarette butts to bogues.

γόπα • (gópa) n (plural γόπες)

1. bogue (Boops boops) (fish)
2. (colloquial) fag-end, cigarette end, butt

• (cigarette end): αποτσίγαρο n (apotsígaro)

• γόπα on the Greek Wikipedia.Wikipedia ^el