Source : Webster's Revised Unabridged Dictionary (1913)

Dung \Dung\, v. t. [imp. & p. p. {Dunged}; p. pr. & vb. n.
   {Dunging}.]
   1. To manure with dung. --Dryden.

   2. (Calico Print.) To immerse or steep, as calico, in a bath
      of hot water containing cow dung; -- done to remove the
      superfluous mordant.