WordNet
plonk down
v. drop heavily [syn: plump down, plank down]
Usage examples of "plonk down".
I thought it would be discouraging for a woman who'd just had a baby to see somebody plonk down a big bouquet of dead flowers in front of her, so I steered the trolley to a washbasin in an alcove in the hall and began to pick out all the flowers that were dead.