Source : Webster's Revised Unabridged Dictionary (1913)

Bucking \Buck"ing\, n.
   1. The act or process of soaking or boiling cloth in an
      alkaline liquid in the operation of bleaching; also, the
      liquid used. --Tomlinson.

   2. A washing.

   3. The process of breaking up or pulverizing ores.

   {Bucking iron} (Mining), a broad-faced hammer, used in
      bucking or breaking up ores.

   {Bucking kier} (Manuf.), a large circular boiler, or kier,
      used in bleaching.

   {Bucking stool}, a washing block.