calk

A pointed projection on a horseshoe to prevent its slipping.

A spike on the sole of a boot to prevent slipping, particularly used in logging.

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 (a drawing) by rubbing the back of it with red or black chalk, and then passing a blunt stylus or needle over the lines, so as to leave a tracing on the paper or other thing against which it is laid or held.