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. [ 1913 Webster ]

Calking iron, a tool like a chisel, used in calking ships, tightening seams in ironwork, etc. [ 1913 Webster ]

Their left hand does the calking iron guide. Dryden. [ 1913 Webster ]