Sealing Joints in Pipes to Make Them Watertight
This page is the CodyCross answer for the clue below from Underground Worlds, Group 2168, Puzzle 4 (Gua Tempurung).
Question is: Sealing Joints in Pipes to Make Them Watertight
and the answer is: CAULKING
Word Meaning:
CAULKING — present participle and gerund of caulk
Definitions from Wiktionary.