- Classroom fixture - It’s used by teachers - Once used in school classrooms - Teacher’s slate - Teaching aid - 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.
- seal with oakum - To drive tarred oakum into the seams between the planks of
(a ship, boat, etc.), to prevent leaking. The calking is completed by
smearing the seams with melted pitch. - To make an indentation in the edge of a metal plate, as
along a seam in a steam boiler or an iron ship, to force the edge of
the upper plate hard against the lower and so fill the crevice. - To copy, as a drawing, by rubbing the back of it with red
or black chalk, and then passing a blunt style or needle over the
lines, so as to leave a tracing on the paper or other thing against
which it is laid or held. - A sharp-pointed piece of iron or steel projecting downward on
the shoe of a horse or an ox, to prevent the animal from slipping; --
called also calker, calkin. - An instrument with sharp points, worn on the sole of a shoe
or boot, to prevent slipping. - To furnish with calks, to prevent slipping on ice; as, to
calk the shoes of a horse or an ox.