It's possible that you're looking for the meaning of a similar-sounding French word, or that "Llyandra" has a different meaning in another language.
Could you provide more context? For example:
* Where did you encounter this word? (e.g., a book, a movie, a website)
* What is the context of the word? (e.g., is it a person's name, a place, a thing?)
Knowing this information will help me give you a more accurate answer.