Bung

bung
    n 1: a plug used to close a hole in a barrel or flask [syn:
         {bung}, {spile}]
    v 1: give a tip or gratuity to in return for a service, beyond
         the compensation agreed on; "Remember to tip the waiter";
         "fee the steward" [syn: {tip}, {fee}, {bung}]
    2: close with a cork or stopper
    

Bung \Bung\ (b[u^]ng), n. [Cf. W. bwng orfice, bunghole, Ir.
   buinne tap, spout, OGael. buine.]
   1. The large stopper of the orifice in the bilge of a cask.
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   2. The orifice in the bilge of a cask through which it is
      filled; bunghole.
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   3. A sharper or pickpocket. [Obs. & Low]
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            You filthy bung, away.                --Shak.
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Bung \Bung\, v. t. [imp. & p. p. {Bunged}; p. pr. & vb. n.
   {Bunging}.]
   To stop, as the orifice in the bilge of a cask, with a bung;
   to close; -- with up.
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   {To bung up}, to use up, as by bruising or over exertion; to
      exhaust or incapacitate for action. [Low]
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            He had bunged up his mouth that he should not have
            spoken these three years.             --Shelton
                                                  (Trans. Don
                                                  Quixote).
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