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gear
noun
a
toothed
wheel
or
set
of
toothed
parts
in
a
machine
that
fit
together
and
pass
movement
or
power
from
one
part
to
another
•
When
the
clock
struck
noon
,
you
could
see
the
tiny
gears
turning
behind
the
glass
face
.
When
the
clock
struck
noon
,
you
could
see
the
tiny
gears
turning
behind
the
glass
face
.
•
The
mechanic
showed
the
class
a
large
steel
gear
whose
teeth
had
worn
down
.
The
mechanic
showed
the
class
a
large
steel
gear
whose
teeth
had
worn
down
.
from
Old
Norse
gervi
“
equipment
,
apparatus
”,
later
narrowed
to
the
mechanical
sense
in
Middle
English
noun
one
of
several
fixed
positions
in
a
vehicle
’
s
transmission
that
controls
the
balance
of
speed
and
power
•
She
shifted
into
first
gear
before
climbing
the
steep
hill
.
She
shifted
into
first
gear
before
climbing
the
steep
hill
.
•
On
the
highway
he
kept
the
car
in
fifth
gear
for
better
fuel
efficiency
.
On
the
highway
he
kept
the
car
in
fifth
gear
for
better
fuel
efficiency
.
automotive
sense
arose
in
late
19th
century
when
multi-speed
transmissions
were
invented
verb
-
gear
,
gearing
,
gears
,
geared
to
design
or
adjust
something
so
that
it
suits
a
particular
purpose
,
situation
,
or
group
•
The
new
math
course
is
geared
toward
beginners
.
The
new
math
course
is
geared
toward
beginners
.
•
They
geared
the
advertising
campaign
to
young
voters
.
They
geared
the
advertising
campaign
to
young
voters
.
extended
verb
use
from
noun
in
19th
century
,
originally
"
gear
up
"
in
rail
and
factory
contexts
then
shortened
