1. a designer or aficionado* of crossword puzzles.
1. A constructor of crosswords.
2. An enthusiast of word games, especially of crosswords.
*meaning an ardent devotee; fan, enthusiast.
Although I never had any patience with crossword puzzles and other such games, my grandmother was such a cruciverbalist that she constantly carried a pocket thesaurus, crossword reference book, and her puzzles with her wherever she went.
This is true. My grandma used to love crosswords. I have no mind or patience for them, though.