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: Share on Facebook (Opens in new window) Facebook Share on X (Opens in new window) X Share on Pinterest (Opens in new window) Pinterest Share on Mastodon (Opens in new window) Mastodon Related