Blackboard
Definition of Blackboard
Black´board`
Pronunciation:
blăk´bōrd`
n.
1.
A
broad
board
painted
black
,
or
any
black
surface
on
which
writing
,
drawing
,
or
the
working
of
mathematical
problems
can
be
done
with
chalk
or
crayons
.
It
is
much
used
in
schools
.
In
late
20th
century
similar
boards
of
a
green
slate
as
well
as
some
colored
white
became
common
;
wrioting
on
the
slate
bioards
may
be
done
with
chalk
,
but
writing
on
the
white
boards
is
done
with
colored
pens
,
such
as
grease
pens
,
which
leaves
a
trace
that
can
be
easily
erased
.
The
newer
boards
,
usualy
called
chalkboards
are
nevertheless
still
sometimes
referred
to
as
blackboards
.
Related Words
chalkboard
,
flat
solid
,
sheet
Word:
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