* It's a misspelling: You might be thinking of a similar-sounding word. Could you check your spelling?
* It's a slang term: It might be a slang term used in a specific community or context. Could you provide more context?
* It's a made-up word: It might be a fictional word from a book, movie, or game. Could you provide more information about where you encountered this word?
Please provide more details so I can help you understand what "chatalkwa" might refer to.