caulker

noun4

1. •
   A person who caulks various structures (as ships) and certain types of piping.

   • He was one of the best caulkers around. — 2016
2. •
   A tool used for caulking ships; a caulking iron.
3. •
   A lime kiln.
4. •
   (slang, no longer used) An alcoholic drink; a dram.