Slang – Plonk Slang – Plonk. Meaning – Cheap wine. Plonk can refer to any wine that is of poor quality. Plonk is British English slang. Example: “I don’t want to cook tonight. Let’s grab a bottle of plonk and order pizza!” Share this:Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on LinkedIn (Opens in new window)Like this:Like Loading... More English: In Slang alcohol British plonk Slang ← Previous Post Next Post →