Wiktionary
plonko
n. (context AU informal English) someone addicted to cheap wine.
Wikipedia
Płonko
Płonko is a village in the administrative district of Gmina Radomin, within Golub-Dobrzyń County, Kuyavian-Pomeranian Voivodeship, in north-central Poland. It lies east of Golub-Dobrzyń and east of Toruń.