Bucking

Part of speech: noun (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.