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escalator
noun
a
moving
metal
staircase
with
steps
linked
in
an
endless
belt
,
used
for
carrying
people
between
different
levels
of
a
building
such
as
a
store
or
station
•
Take
the
escalator
to
the
second
floor
of
the
mall
.
Take
the
escalator
to
the
second
floor
of
the
mall
.
•
The
escalator
broke
down
during
rush
hour
.
The
escalator
broke
down
during
rush
hour
.
Coined
around
1900
as
a
trademark
by
the
Otis
Elevator
Company
,
combining
elements
of
'elevator'
and
Latin
'scala'
(
stair
or
ladder
),
referring
to
its
step-climbing
mechanism
.
noun
a
clause
in
a
contract
that
provides
for
increases
or
decreases
in
payment
according
to
changes
in
conditions
such
as
costs
or
wages
•
The
new
labor
contract
includes
a
wage
escalator
.
The
new
labor
contract
includes
a
wage
escalator
.
•
Their
lease
has
a
rent
escalator
tied
to
inflation
.
Their
lease
has
a
rent
escalator
tied
to
inflation
.
Figurative
extension
from
the
mechanical
escalator
sense
in
the
mid-20th
century
,
evoking
automatic
upward
movement
like
rising
steps
.