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.-to wound with a calk; as when a horse injures a leg or a foot with a calk on one of the other feet.