* It's a misspelling. Double-check the spelling to see if you meant a similar word.
* It's a slang term or dialect word. If you heard it in a specific context, try to provide more information about where or who used it.
* It's a word from a specific language. If you know the language it came from, you might be able to find a translation.
Please provide more context so I can help you understand the meaning of "fartun."