DICT.TW Dictionary Taiwan

 plunk down
 放下,使倒下,隤然坐下,沈重地躺下;付出,支付

 plunk down
      v : 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" [syn: plank, flump, plonk, plop, plunk,
           plump down, plump]