Where does “plonko” come from?

plonko (English) comes from English plonk, from French vin blanc — white wine.

plonko (English): someone addicted to cheap wine

Definitions

  1. someone addicted to cheap wine

Ancestry of “plonko”, step by step

StepLanguageWordMeaning
1EnglishplonkThe sound made by something solid landing; The...
2Frenchvin blancwhite wine
Every word from French vin blanc →Every word from English plonk →
plonko — Etymology, Origin & Word History | Etymology Explorer