PLONK Meaning of PLONK in English v. & n.v.tr. 1 set down hurriedly or clumsily. 2 (usu. foll. by down) set down firmly. n. 1 an act of plonking. 2 a heavy thud. [ imit. ] Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012