This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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

n. A tool used for caulking ships; a caulking iron

n. See calker.

n. See cauker.

"“It is,” the caulker said and spat once more and invoked more luck and joined the gang."

caulking   

bosun    glover    franklin    boson    landholder