5 letters · 11 points in Scrabble
noun a waterproof filler and sealant that is used in building and repair to make watertight
verb seal with caulking
originFrom Old Northern French cauquer, from Late Latin calicāre (“to fill in with limestone, caulk”), derived from calx (“limestone, chalk”). Related to calx, cauk, chalk, and calculus.
Etymology from Wiktionary, CC BY-SA 3.0