/ plɒŋk; NAmE plɑːŋk; plɔːŋk/ verb , noun
■ verb ( especially BrE ) ( NAmE usually plunk ) [ vn ] ( informal )
1.
[+ adv. / prep. ] to put sth down on sth, especially noisily or carelessly :
He plonked the books down on the table.
Just plonk your bag anywhere.
2.
plonk (yourself) (down) to sit down heavily or carelessly :
He just plonked himself down and turned on the TV.
■ noun ( informal , especially BrE )
1.
[ U ] cheap wine that is not of good quality
2.
[ C , usually sing. ] a low sound like that of sth heavy falling and hitting a surface :
She sat down with a plonk.
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WORD ORIGIN
verb and noun sense 2 late 19th cent. (originally dialect): imitative; compare with plunk .
noun sense 1 1930s (originally Australian): probably an alteration of blanc in French vin blanc white wine.