Bucking

from The Collaborative International Dictionary of English v.0.48
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.
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   2. A washing.
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   3. The process of breaking up or pulverizing ores.
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   {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.
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from The Collaborative International Dictionary of English v.0.48
Buck \Buck\, v. t. [imp. & p. p. {Bucked} (b[u^]kt); p. pr. &
   vb. n. {Bucking}.] [OE. bouken; akin to LG. b["u]ken, Dan.
   byge, Sw. byka, G. bauchen, beuchen; cf. OF. buer. Cf. the
   preceding noun.]
   1. To soak, steep, or boil, in lye or suds; -- a process in
      bleaching.
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   2. To wash (clothes) in lye or suds, or, in later usage, by
      beating them on stones in running water.
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   3. (Mining) To break up or pulverize, as ores.
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