* A misspelling: It could be a misspelling of a similar word like "Nadine", "Nardeen", or "Nardin".
* A personal name: It could be a unique personal name, perhaps of Arabic or Persian origin.
* A made-up word: It could be a word created for a specific purpose, like in a fictional story or a game.
To understand the meaning, you need more context:
* Where did you encounter this word? (In a book, a conversation, a website?)
* What was the context around the word? (What was being discussed or written about?)
With more information, we can help you decipher the meaning of "Nardeen".