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chalk
noun
a
small
stick
of
soft
white
or
coloured
material
used
for
writing
or
drawing
on
blackboards
or
rough
surfaces
•
The
teacher
picked
up
a
piece
of
chalk
and
wrote
the
date
on
the
blackboard
.
The
teacher
picked
up
a
piece
of
chalk
and
wrote
the
date
on
the
blackboard
.
•
Sam
snapped
the
chalk
in
half
while
drawing
a
hopscotch
grid
on
the
sidewalk
.
Sam
snapped
the
chalk
in
half
while
drawing
a
hopscotch
grid
on
the
sidewalk
.
Old
English
cealc
,
from
Latin
calx
‘
limestone
’,
ultimately
from
Greek
khalix
‘
pebble
’.
noun
-
chalk
a
soft
white
limestone
formed
from
the
remains
of
tiny
sea
creatures
,
often
found
in
cliffs
and
used
to
make
chalk
sticks
•
The
cliffs
were
made
of
dazzling
white
chalk
that
sparkled
in
the
sun
.
The
cliffs
were
made
of
dazzling
white
chalk
that
sparkled
in
the
sun
.
•
Geologists
collected
samples
of
chalk
to
study
ancient
marine
fossils
.
Geologists
collected
samples
of
chalk
to
study
ancient
marine
fossils
.
The
geological
sense
shares
the
same
origin
as
the
writing
material
:
Latin
calx
‘
limestone
’.
verb
-
chalk
,
chalking
,
chalks
,
chalked
to
write
,
draw
,
or
mark
something
with
chalk
,
or
to
rub
chalk
onto
a
surface
•
Maya
chalked
the
score
on
the
playground
wall
after
the
game
.
Maya
chalked
the
score
on
the
playground
wall
after
the
game
.
•
Before
batting
,
the
player
chalked
his
hands
to
improve
grip
.
Before
batting
,
the
player
chalked
his
hands
to
improve
grip
.
Verb
sense
developed
from
the
noun
in
Middle
English
,
meaning
‘
to
mark
with
chalk
’.
chalkboard
noun
a
large
dark-colored
board
with
a
smooth
surface
that
people
write
or
draw
on
using
sticks
of
chalk
,
especially
in
classrooms
•
The
teacher
wrote
the
math
problem
on
the
chalkboard
for
everyone
to
see
.
The
teacher
wrote
the
math
problem
on
the
chalkboard
for
everyone
to
see
.
•
After
class
,
Jake
stayed
behind
to
erase
the
dusty
chalkboard
.
After
class
,
Jake
stayed
behind
to
erase
the
dusty
chalkboard
.
Formed
from
“
chalk
”
+
“
board
,”
first
recorded
in
the
late
19th
century
as
an
alternative
to
“
blackboard
.”