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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.