Make watertight (4)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">make watertight</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for caulk that I've seen before include "Make boat waterproof by filling seams" , "Make watertight by sealing joints or seams" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">make watertight</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for seal that I've seen before include "Stamp of approval" , "Amphibious sea animal or kind of stamp" , "Sea-dweller can produce a wax impression" , "See 7" , "Fasten with hot wax" .)