Calking meaning : 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 drive oakum into the seams of a ship's wooden deck or hull to make it watertight. To apply caulking to joints, cracks, or a juncture of different materials. Fuck A sealing material used to seal joints between heterogeneous materials in many kinds of construction and manufacture.