* A misspelling: Perhaps you meant a similar-sounding word like "aneki," "aneki," or "aneki."
* A regional term: It could be a slang or dialect word used in a specific region.
* A made-up word: It could be a fictional term from a book, movie, or game.
To help me understand what you're looking for, please provide more context:
* What language are you interested in?
* Where did you encounter this word?
* Can you give an example of how it was used?
Once I have more information, I can try to determine the meaning of "aneki."