I. plonk 1 /plɒŋk $ plɑːŋk, plɒːŋk/ BrE AmE verb [transitive always + adverb/preposition] especially British English informal
1 . ( also plonk something down ) to put something down somewhere, especially in a noisy and careless way SYN plunk American English :
You can plonk those bags down anywhere in my room.
plonk something on/onto/beside etc something/somebody
He plonked a couple of glasses on the table.
2 . plonk yourself (down) to sit down heavily and then relax:
We plonked ourselves down in front of the telly and opened a couple of beers.
II. plonk 2 BrE AmE noun [uncountable]
British English informal cheap wine