Chiefly British Slang Cheap or inferior wine.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "plonk" in a sentence
"Their wine might be as good as the lovely plonk from the Central Valley."
"Me and my fellow bloggers had some that we'd call plonk at best."
"The country is already renowned for its cheaper offerings, known as plonk; for the first time this year, a dry wine by Chile's Concha y Toro beat out Italy's syrupy Riunite as the top U.S. wine import."