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river
noun
a
large
natural
stream
of
water
that
flows
across
land
and
usually
empties
into
a
sea
,
lake
,
or
another
river
•
The
river
flowed
gently
beneath
the
old
stone
bridge
.
The
river
flowed
gently
beneath
the
old
stone
bridge
.
•
During
the
heatwave
,
children
splashed
in
the
cool
river
near
the
village
.
During
the
heatwave
,
children
splashed
in
the
cool
river
near
the
village
.
Old
English
“
rīfer
”,
from
Latin
“
rīpārius
”
meaning
‘
of
the
river-bank
’.
noun
a
very
large
or
continuous
flow
of
people
,
vehicles
,
liquid
,
or
other
things
•
A
river
of
cars
inched
along
the
highway
at
rush
hour
.
A
river
of
cars
inched
along
the
highway
at
rush
hour
.
•
She
wept
a
river
of
tears
after
hearing
the
heartbreaking
news
.
She
wept
a
river
of
tears
after
hearing
the
heartbreaking
news
.
noun
in
poker
,
the
fifth
and
final
community
card
dealt
,
revealed
after
the
turn
•
He
was
losing
until
the
river
gave
him
a
winning
flush
.
He
was
losing
until
the
river
gave
him
a
winning
flush
.
•
On
the
river
,
she
decided
to
fold
rather
than
risk
all
her
chips
.
On
the
river
,
she
decided
to
fold
rather
than
risk
all
her
chips
.
Adopted
in
1970s
American
poker
slang
;
possibly
from
the
idea
that
a
gambler
who
lost
on
the
last
card
might
need
to
‘
go
down
the
river
’
to
escape
debts
.
driver
noun
a
person
who
operates
and
controls
a
vehicle
such
as
a
car
,
bus
,
or
truck
•
The
driver
stopped
the
car
to
let
the
children
cross
the
street
.
The
driver
stopped
the
car
to
let
the
children
cross
the
street
.
•
Ella
works
as
a
bus
driver
in
the
city
.
Ella
works
as
a
bus
driver
in
the
city
.
from
the
verb
drive
+
-er
,
first
recorded
in
English
in
the
late
Middle
English
period
noun
a
small
computer
program
that
allows
a
specific
piece
of
hardware
to
communicate
with
the
operating
system
•
You
need
to
update
the
printer
driver
to
make
it
work
with
the
new
computer
.
You
need
to
update
the
printer
driver
to
make
it
work
with
the
new
computer
.
•
The
graphics
driver
crashed
while
he
was
playing
the
game
.
The
graphics
driver
crashed
while
he
was
playing
the
game
.
figurative
extension
of
the
idea
of
something
that
'drives'
or
controls
another
component
,
first
used
in
computing
in
the
1960s
noun
in
golf
,
the
longest-shafted
club
with
a
large
head
used
to
hit
the
ball
a
very
long
distance
from
the
tee
•
He
hit
the
ball
with
a
driver
and
sent
it
flying
down
the
fairway
.
He
hit
the
ball
with
a
driver
and
sent
it
flying
down
the
fairway
.
•
My
new
driver
gives
me
extra
distance
off
the
tee
.
My
new
driver
gives
me
extra
distance
off
the
tee
.
named
because
the
club
is
used
to
‘
drive
’
the
ball
;
recorded
in
golf
terminology
by
the
late
19th
century
noun
a
main
factor
or
force
that
causes
something
important
to
happen
or
develop
•
Innovation
is
a
key
driver
of
economic
growth
.
Innovation
is
a
key
driver
of
economic
growth
.
•
Climate
change
is
becoming
the
major
driver
of
new
energy
policies
.
Climate
change
is
becoming
the
major
driver
of
new
energy
policies
.
metaphorical
use
of
something
that
‘
drives
’
progress
,
first
attested
in
economic
writing
in
the
early
20th
century