CAULKS is a playable word

caulk Scrabble® Dictionary

verb
caulked, caulking, caulks
to make the seams of a ship watertight
38 Playable Words can be made from "CAULKS"
   2-Letter Words (5 found)
   3-Letter Words (12 found)
   4-Letter Words (13 found)
   5-Letter Words (7 found)
   6-Letter Words (1 found)