* It's a misspelling: Could you double-check the spelling? Maybe it's a similar word like "etang," which is French for "pond."
* It's a regional term: It might be a slang word or a term used in a specific community or region. Can you provide more context about where you encountered this word?
* It's a made-up word: Perhaps it's a fictional term or a word created for a specific purpose.
Please provide more information so I can help you understand what "etangadi" might mean.