* It's a misspelling: There might be a similar word you're thinking of, perhaps with a slight variation in spelling.
* It's a name: Laarni could be a personal name, possibly of a specific origin or culture.
* It's a word from a specific language: If you could provide more context about where you encountered this word (e.g., a book, a conversation), it might help identify its meaning.
Please provide more information about where you came across "Laarni" so I can help you find its meaning.