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beam
noun
a
long
,
thick
piece
of
wood
,
metal
,
or
concrete
that
supports
a
roof
,
floor
,
bridge
,
or
other
structure
by
carrying
weight
across
an
open
space
•
The
workers
lifted
the
heavy
steel
beam
into
place
above
the
doorway
.
The
workers
lifted
the
heavy
steel
beam
into
place
above
the
doorway
.
•
A
thick
wooden
beam
runs
across
the
ceiling
of
the
rustic
cottage
.
A
thick
wooden
beam
runs
across
the
ceiling
of
the
rustic
cottage
.
Old
English
bēam
“
tree
,
post
,
beam
,”
originally
meaning
“
living
tree
”
and
later
“
timber
,”
related
to
German
Baum
“
tree
.”
noun
a
narrow
line
or
ray
of
light
,
energy
,
or
particles
that
shines
from
a
source
•
A
bright
beam
of
sunlight
pierced
the
clouds
.
A
bright
beam
of
sunlight
pierced
the
clouds
.
•
The
lighthouse
sent
a
revolving
beam
across
the
sea
.
The
lighthouse
sent
a
revolving
beam
across
the
sea
.
Extended
from
structural
sense
to
‘
ray
of
light
’
in
Middle
English
,
perhaps
by
metaphor
with
a
straight
piece
of
timber
.
verb
-
beam
,
beaming
,
beams
,
beamed
to
smile
very
broadly
and
happily
•
She
couldn't
help
but
beam
when
she
saw
her
exam
results
.
She
couldn't
help
but
beam
when
she
saw
her
exam
results
.
•
The
proud
father
beamed
as
his
son
walked
across
the
graduation
stage
.
The
proud
father
beamed
as
his
son
walked
across
the
graduation
stage
.
Figurative
use
from
idea
of
‘
light
shining
’,
first
recorded
in
late
Middle
English
.
verb
-
beam
,
beaming
,
beams
,
beamed
to
send
or
broadcast
light
,
radio
waves
,
signals
,
or
images
across
a
distance
,
sometimes
instantly
in
science
fiction
•
Satellites
beam
television
signals
to
homes
around
the
world
.
Satellites
beam
television
signals
to
homes
around
the
world
.
•
The
presenter
beamed
a
smile
to
the
audience
and
then
beamed
the
slideshow
onto
the
giant
screen
.
The
presenter
beamed
a
smile
to
the
audience
and
then
beamed
the
slideshow
onto
the
giant
screen
.
Extended
from
the
noun
sense
of
a
ray
of
light
;
electronic
use
began
with
radio
in
the
early
20th
century
;
teleportation
sense
popularized
by
1960s
science-fiction
.
