plunk /ˈplʌŋk/
  (vt.)使發砰聲,沈重地墜落(vi.)發砰砰聲,支援使勁投擲,撲通聲,撲通落下
  Plunk v. t.  [Chiefly Colloq.]
  1. To pluck and release quickly (a musical string); to twang.
  2.  To throw, push, drive heavily, plumply, or suddenly; as, to plunk down a dollar; also, to hit or strike.
  3.  To be a truant from (school). [Scot.]
  Plunk, v. i.  [Chiefly Colloq.]
  1. To make a quick, hollow, metallic, or harsh sound, as by pulling hard on a taut string and quickly releasing it; of a raven, to croak.
  2.  To drop or sink down suddenly or heavily; to plump.
  3.  To play truant, or “hooky”. [Scot.]
  Plunk, n.
  1. Act or sound of plunking. [Colloq.]
  2.  [Slang] (a) A large sum of money. [Obs.] (b) A dollar. [U. S.]
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  plunk
       n 1: a hollow twanging sound
       2: (baseball) hitting a baseball so that it drops suddenly
          [syn: plunker]
       adv : with a short hollow thud; "plop came the ball down to the
             corner of the green" [syn: plop]
       v 1: make or move along with a sound as of a horse's hooves
            striking the ground [syn: clop, clump, clunk]
       2: 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, plump
          down, plunk down, plump]
       3: drop steeply; "the stock market plunged" [syn: dive, plunge]
       4: pull lightly but sharply with a plucking motion; "he plucked
          the strings of his mandolin" [syn: pluck, pick]