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Webster's 1913 Dictionary

JIGGING

JIGGING Jig "ging, n. (Mining )

 

Defn: 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 templet 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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