\Calk"ing\, n.
The act or process of making seems tight, as in ships, or of
furnishing with calks, as a shoe, or copying, as a drawing.
{Calking iron}, a tool like a chisel, used in calking ships,
   tightening seams in ironwork, etc.
         Their left hand does the calking iron guide.
                                               --Dryden.