DICT.TW Dictionary Taiwan

 Jig·ging n. Mining The act or using a jig; the act of separating ore with a jigger, or wire-bottomed sieve, which is moved up and down in water.
 Jigging machine. (a) Mining A machine for separating ore by the process of jigging. (b) Metal Working A machine with a rotary milling cutter and a template by which the action of the cutter is guided or limited; -- used for forming the profile of an irregularly shaped piece; a profiling machine.
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