* Misspelled a word: Could you be thinking of "lacy" which refers to delicate fabric with an intricate pattern, or "laconic" meaning using very few words?
* Heard a specific term in a specific context: If you remember the context where you heard "lacián," please provide more information.
* Invented a word: It's possible it's a made-up word, maybe for a fictional language or a personal project.
Please provide more context so I can help you understand what you're looking for.