Definify.com
Webster 1913 Edition
Jigging
Jig′ging
,Noun.
(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.