< /ˈkɔ kɪŋ/. a material or substance used for caulking.
- to stop up (cracks, crevices, etc) with a filler
- nautical to pack (the seams) between the planks of the bottom of (a vessel) with waterproof material to prevent leakage
late 14c., “to stop up crevices or cracks,” from Old North French cauquer, from Late Latin calicare “to stop up chinks with lime,” from Latin calx (2) “lime, limestone” (see chalk). Original sense is nautical, of making ships watertight. Related: Caulked; caulking. As a noun, “caulking material,” by 1980 (caulking in this sense was used from 1743). Related: Caulker.