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chainsaw
noun
a
portable
power-driven
saw
whose
sharp
teeth
run
round
a
rotating
chain
,
used
to
cut
wood
,
ice
,
or
similar
materials
•
The
logger
pulled
the
cord
,
and
the
chainsaw
roared
to
life
beside
the
fallen
pine
.
The
logger
pulled
the
cord
,
and
the
chainsaw
roared
to
life
beside
the
fallen
pine
.
•
Always
wear
safety
goggles
when
operating
a
chainsaw
in
the
backyard
.
Always
wear
safety
goggles
when
operating
a
chainsaw
in
the
backyard
.
From
chain
+
saw
;
first
recorded
in
the
early
20th
century
for
logging
technology
.
verb
to
cut
through
something
by
using
a
chainsaw
•
Workers
quickly
chainsawed
the
fallen
log
blocking
the
mountain
road
.
Workers
quickly
chainsawed
the
fallen
log
blocking
the
mountain
road
.
•
The
artist
is
chainsawing
an
ice
sculpture
of
a
bear
for
the
winter
festival
.
The
artist
is
chainsawing
an
ice
sculpture
of
a
bear
for
the
winter
festival
.
Verb
derived
from
the
noun
chainsaw
,
first
used
mid-20th
century
as
the
tool
became
common
.
chain
noun
a
series
of
metal
rings
or
links
connected
together
,
often
used
for
fastening
,
pulling
,
or
securing
things
•
The
guard
locked
the
gate
with
a
heavy
chain
.
The
guard
locked
the
gate
with
a
heavy
chain
.
•
We
used
a
long
chain
to
pull
the
stuck
car
out
of
the
mud
.
We
used
a
long
chain
to
pull
the
stuck
car
out
of
the
mud
.
From
Old
French
chaine
,
from
Latin
catena
meaning
‘
link
,
fetter
’.
noun
a
piece
of
jewellery
made
of
small
linked
metal
rings
worn
around
the
neck
or
wrist
•
She
received
a
gold
chain
for
her
birthday
.
She
received
a
gold
chain
for
her
birthday
.
•
The
rapper
wore
a
thick
diamond-studded
chain
on
stage
.
The
rapper
wore
a
thick
diamond-studded
chain
on
stage
.
Same
origin
as
Sense
1
but
specialised
for
personal
adornment
.
noun
a
group
of
shops
,
hotels
,
or
restaurants
owned
by
the
same
company
and
sharing
the
same
name
•
The
fast-food
chain
opened
ten
new
branches
this
year
.
The
fast-food
chain
opened
ten
new
branches
this
year
.
•
She
manages
a
hotel
chain
with
properties
worldwide
.
She
manages
a
hotel
chain
with
properties
worldwide
.
Extension
of
Sense
1
,
referring
metaphorically
to
a
linked
set
of
businesses
.
verb
to
fasten
,
connect
,
or
restrain
someone
or
something
using
a
chain
•
They
chained
the
bikes
to
the
rack
before
going
inside
.
They
chained
the
bikes
to
the
rack
before
going
inside
.
•
The
dog
was
cruelly
chained
to
a
post
all
day
.
The
dog
was
cruelly
chained
to
a
post
all
day
.
Verb
use
recorded
since
Middle
English
,
directly
from
the
noun
.
noun
a
connected
series
of
events
or
things
,
where
each
one
leads
to
the
next
•
One
small
mistake
set
off
a
chain
of
accidents
on
the
highway
.
One
small
mistake
set
off
a
chain
of
accidents
on
the
highway
.
•
Their
research
revealed
a
long
chain
of
historical
events
leading
to
the
revolution
.
Their
research
revealed
a
long
chain
of
historical
events
leading
to
the
revolution
.
Metaphorical
sense
dating
from
the
16th
century
,
likening
linked
events
to
linked
metal
rings
.
blockchain
noun
a
continuously
growing
digital
record
,
made
of
linked
blocks
of
data
,
that
is
shared
and
verified
across
a
decentralized
computer
network
•
The
company
is
using
blockchain
to
track
the
origin
of
its
coffee
beans
.
The
company
is
using
blockchain
to
track
the
origin
of
its
coffee
beans
.
•
A
programmer
explained
how
a
blockchain
stores
each
transaction
in
a
secure
block
.
A
programmer
explained
how
a
blockchain
stores
each
transaction
in
a
secure
block
.
Coined
in
the
early
2010s
from
block
+
chain
,
referring
to
a
chain
of
data
blocks
linked
together
,
originally
in
Bitcoin
’
s
design
.
keychain
noun
a
small
chain
,
ring
,
or
loop
to
which
several
keys
can
be
attached
.
•
I
put
all
my
keys
on
one
keychain
so
I
don't
lose
them
.
I
put
all
my
keys
on
one
keychain
so
I
don't
lose
them
.
•
His
keychain
has
a
photo
of
his
dog
on
it
.
His
keychain
has
a
photo
of
his
dog
on
it
.
Late
19th
century
:
from
'
key
'
+
'
chain
'
.
noun
a
small
ring
,
chain
,
or
cord
with
a
clip
or
loop
for
attaching
and
holding
keys
,
often
featuring
a
decorative
tag
or
fob
.
•
She
keeps
her
house
and
car
keychain
on
a
hook
by
the
door
.
She
keeps
her
house
and
car
keychain
on
a
hook
by
the
door
.
•
The
kids
love
collecting
fun
keychains
from
their
vacations
.
The
kids
love
collecting
fun
keychains
from
their
vacations
.
Formed
as
a
compound
of
key
+
chain
in
the
early
1900s
,
when
people
began
using
chains
to
organize
multiple
keys
conveniently
.