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lab
noun
a
room
or
building
with
special
equipment
where
scientists
,
engineers
,
or
medical
workers
carry
out
tests
,
research
,
or
experiments
•
Mia
carefully
measured
the
solution
before
placing
it
in
the
lab
oven
.
Mia
carefully
measured
the
solution
before
placing
it
in
the
lab
oven
.
•
The
new
microscope
arrived
,
and
the
whole
lab
gathered
to
try
it
out
.
The
new
microscope
arrived
,
and
the
whole
lab
gathered
to
try
it
out
.
Shortened
form
of
“
laboratory
,”
first
recorded
in
the
late
1800s
.
noun
a
class
period
at
school
or
university
in
which
students
perform
practical
experiments
,
usually
held
in
a
laboratory
•
We
have
biology
lab
on
Wednesday
afternoon
.
We
have
biology
lab
on
Wednesday
afternoon
.
•
During
chemistry
lab
,
we
learned
how
to
titrate
acids
and
bases
.
During
chemistry
lab
,
we
learned
how
to
titrate
acids
and
bases
.
From
“
laboratory
”
in
the
sense
of
a
practical
science
class
;
popularized
in
U
.
S
.
universities
in
the
early
20th
century
.
noun
informal
short
form
of
“
Labrador
Retriever
,”
a
large
,
friendly
dog
bred
to
retrieve
game
,
now
a
popular
family
pet
and
service
dog
•
The
black
lab
wagged
her
tail
and
greeted
everyone
at
the
door
.
The
black
lab
wagged
her
tail
and
greeted
everyone
at
the
door
.
•
Sam
takes
his
lab
to
the
park
every
morning
for
a
long
run
.
Sam
takes
his
lab
to
the
park
every
morning
for
a
long
run
.
Clipped
form
of
“
Labrador
Retriever
,”
first
attested
mid-20th
century
in
North
America
.
labor
noun
physical
or
mental
work
,
especially
hard
effort
•
After
hours
of
labor
,
the
volunteers
finished
cleaning
the
beach
.
After
hours
of
labor
,
the
volunteers
finished
cleaning
the
beach
.
•
Building
the
stone
wall
was
slow
,
back-breaking
labor
.
Building
the
stone
wall
was
slow
,
back-breaking
labor
.
From
Latin
labor
“
toil
,
work
.”
noun
-
labor
workers
,
especially
those
who
do
physical
work
,
considered
as
a
group
•
Labor
demanded
higher
wages
during
the
negotiations
.
Labor
demanded
higher
wages
during
the
negotiations
.
•
Organised
labor
can
influence
government
policy
.
Organised
labor
can
influence
government
policy
.
Sense
developed
in
19th-century
economic
writing
.
noun
-
labor
the
process
in
which
a
woman
’
s
body
contracts
and
pushes
to
give
birth
to
a
baby
•
She
went
into
labor
at
midnight
.
She
went
into
labor
at
midnight
.
•
Breathing
techniques
helped
her
cope
during
labor
.
Breathing
techniques
helped
her
cope
during
labor
.
Transferred
medical
sense
recorded
since
the
16th
century
.
verb
-
labor
,
laboring
,
labors
,
labored
to
work
hard
or
to
move
with
great
effort
•
The
farmers
labored
in
the
blazing
sun
.
The
farmers
labored
in
the
blazing
sun
.
•
She
labored
over
the
report
until
midnight
.
She
labored
over
the
report
until
midnight
.
From
Latin
laborare
“
to
toil
.”
labour
noun
physical
or
mental
work
,
especially
hard
effort
•
Restoring
the
old
cottage
involved
months
of
labour
.
Restoring
the
old
cottage
involved
months
of
labour
.
•
Heavy
labour
in
the
factory
left
him
exhausted
every
evening
.
Heavy
labour
in
the
factory
left
him
exhausted
every
evening
.
From
Latin
labor
“
toil
,
work
.”
noun
-
labour
workers
,
especially
those
who
do
physical
work
,
considered
as
a
group
•
Labour
in
Britain
gained
many
rights
in
the
20th
century
.
Labour
in
Britain
gained
many
rights
in
the
20th
century
.
•
The
union
represents
thousands
of
skilled
labour
across
the
region
.
The
union
represents
thousands
of
skilled
labour
across
the
region
.
Sense
emerged
with
industrialisation
in
Britain
.
noun
-
labour
the
process
in
which
a
woman
’
s
body
contracts
and
pushes
to
give
birth
to
a
baby
•
The
midwife
confirmed
she
was
in
active
labour
.
The
midwife
confirmed
she
was
in
active
labour
.
•
Many
women
choose
water
labour
for
comfort
.
Many
women
choose
water
labour
for
comfort
.
Transferred
medical
sense
recorded
since
the
16th
century
.
verb
-
labour
,
labouring
,
labours
,
laboured
to
work
hard
or
to
move
with
great
effort
•
They
laboured
for
years
to
restore
the
castle
.
They
laboured
for
years
to
restore
the
castle
.
•
The
cyclist
laboured
up
the
final
ascent
.
The
cyclist
laboured
up
the
final
ascent
.
From
Latin
laborare
“
to
toil
.”
label
noun
a
small
piece
of
paper
,
cloth
,
or
plastic
attached
to
something
that
gives
information
such
as
its
name
,
price
,
or
instructions
•
Ella
peeled
the
old
label
off
the
bottle
so
she
could
reuse
it
.
Ella
peeled
the
old
label
off
the
bottle
so
she
could
reuse
it
.
•
The
price
label
said
the
sweater
was
on
sale
for
ten
dollars
.
The
price
label
said
the
sweater
was
on
sale
for
ten
dollars
.
Middle
English
,
from
Old
French
‘
label
,
lapel
’,
originally
‘
edge
,
ribbon
’.
noun
a
word
or
short
phrase
used
to
describe
a
person
or
thing
,
often
suggesting
a
fixed
idea
or
judgment
•
Some
students
dislike
the
label
“
nerd
”
because
it
feels
unfair
.
Some
students
dislike
the
label
“
nerd
”
because
it
feels
unfair
.
•
The
politician
rejected
the
label
of
being
‘
out
of
touch
’.
The
politician
rejected
the
label
of
being
‘
out
of
touch
’.
noun
a
company
that
produces
and
sells
recorded
music
•
The
band
signed
with
a
major
label
to
release
their
first
album
.
The
band
signed
with
a
major
label
to
release
their
first
album
.
•
Independent
labels
often
give
artists
more
creative
freedom
.
Independent
labels
often
give
artists
more
creative
freedom
.
verb
-
label
,
labeling
,
labels
,
labeled
to
attach
a
label
to
something
•
We
labeled
each
box
so
the
movers
would
know
where
to
put
it
.
We
labeled
each
box
so
the
movers
would
know
where
to
put
it
.
•
Please
label
the
folders
by
subject
before
filing
them
.
Please
label
the
folders
by
subject
before
filing
them
.
verb
-
label
,
labeling
,
labels
,
labeled
to
describe
or
classify
someone
or
something
,
especially
in
a
way
that
may
be
unfair
or
too
simple
•
It
is
wrong
to
label
all
teenagers
as
lazy
.
It
is
wrong
to
label
all
teenagers
as
lazy
.
•
The
media
labeled
her
a
hero
after
the
rescue
.
The
media
labeled
her
a
hero
after
the
rescue
.
laboratory
noun
-
laboratory
,
laboratories
a
room
or
building
with
special
equipment
where
scientists
,
technicians
,
or
students
carry
out
experiments
,
research
,
or
tests
•
The
students
wore
white
coats
as
they
mixed
chemicals
in
the
school
laboratory
.
The
students
wore
white
coats
as
they
mixed
chemicals
in
the
school
laboratory
.
•
In
the
crime
laboratory
,
a
male
technician
examined
fingerprints
under
a
powerful
microscope
.
In
the
crime
laboratory
,
a
male
technician
examined
fingerprints
under
a
powerful
microscope
.
Late
16th
century
:
from
medieval
Latin
laboratorium
‘
a
place
for
labor
or
work
’,
from
Latin
labor
‘
work
’.
noun
-
laboratory
,
laboratories
a
place
,
situation
,
or
environment
where
new
ideas
,
methods
,
or
activities
are
tested
and
developed
•
Silicon
Valley
is
a
living
laboratory
for
cutting-edge
technology
.
Silicon
Valley
is
a
living
laboratory
for
cutting-edge
technology
.
•
The
island
became
a
real-world
laboratory
of
sustainable
energy
projects
.
The
island
became
a
real-world
laboratory
of
sustainable
energy
projects
.
Extended
figurative
use
dating
from
the
early
20th
century
,
applying
the
idea
of
a
test
environment
to
social
and
creative
fields
.
available
adjective
able
to
be
used
,
obtained
,
or
reached
because
it
is
present
and
not
already
taken
•
“
Is
this
seat
available
or
is
someone
sitting
here
?”
“
Is
this
seat
available
or
is
someone
sitting
here
?”
•
The
app
shows
which
hotel
rooms
are
available
tonight
.
The
app
shows
which
hotel
rooms
are
available
tonight
.
adjective
free
to
do
something
because
you
are
not
busy
•
Are
you
available
for
a
meeting
at
3
p
.
m
.?
Are
you
available
for
a
meeting
at
3
p
.
m
.?
•
I'm
sorry
,
the
doctor
isn't
available
right
now
.
I'm
sorry
,
the
doctor
isn't
available
right
now
.
adjective
not
currently
in
a
romantic
relationship
and
open
to
dating
•
He
asked
if
she
was
available
,
but
she
said
she
was
already
seeing
someone
.
He
asked
if
she
was
available
,
but
she
said
she
was
already
seeing
someone
.
•
All
his
friends
are
married
,
but
he's
still
available
.
All
his
friends
are
married
,
but
he's
still
available
.