definition of
plonk

[1] #1 plonk n. a cheap wine of inferior quality. wn

[2] #2 plonk v. [plank, flump, plop, plunk, plump down, plunk down, plump] set (something or oneself) down with or as if with a noise; "He planked the money on the table"; "He planked himself into the sofa". wn

[3] #3 plonk n. the noise of something dropping (as into liquid). wn