Calk
Part of speech: noun
Definition: A pointed projection on a horseshoe to prevent it slipping.
Part of speech: verb
Definition: 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.
Caulk
Part of speech: noun
Definition: caulkinga composition of vehicle and pigment used at ambient temperatures for filling/sealing joints or junctures, that remains elastic for an extended period of time after application.
Part of speech: verb
Definition: To drive oakum into the seams of a ship's wooden deck or hull in order to make them watertightTo apply caulking to joints, cracks, or a juncture of different materials.