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ceiling
noun
the
inside
surface
of
the
top
of
a
room
,
the
part
you
see
when
you
look
straight
up
•
The
paint
on
the
ceiling
is
starting
to
peel
.
The
paint
on
the
ceiling
is
starting
to
peel
.
•
Tom
lay
on
his
bed
and
stared
at
the
ceiling
until
he
fell
asleep
.
Tom
lay
on
his
bed
and
stared
at
the
ceiling
until
he
fell
asleep
.
From
Old
French
ceil
,
ciel
(“
sky
,
canopy
”),
later
influenced
by
Latin
caelum
(“
sky
”).
The
meaning
shifted
from
“
sky
”
to
“
top
interior
surface
”
in
the
14th
century
.
noun
a
maximum
limit
that
something
is
allowed
to
reach
•
The
government
introduced
a
price
ceiling
on
basic
food
items
.
The
government
introduced
a
price
ceiling
on
basic
food
items
.
•
Our
budget
ceiling
for
the
project
is
ten
thousand
dollars
.
Our
budget
ceiling
for
the
project
is
ten
thousand
dollars
.
noun
the
highest
height
at
which
an
aircraft
can
fly
safely
,
or
the
height
of
the
lowest
cloud
layer
covering
most
of
the
sky
•
The
fighter
jet
has
a
service
ceiling
of
15
,
000
metres
.
The
fighter
jet
has
a
service
ceiling
of
15
,
000
metres
.
•
Low
clouds
reduced
the
cloud
ceiling
to
just
500
metres
today
.
Low
clouds
reduced
the
cloud
ceiling
to
just
500
metres
today
.
