* A misspelling: Perhaps you meant "Airs," which refers to the manner or way in which something is done or presented.
* A made-up word: It might be a term created for a specific purpose, like a fictional name or a scientific concept.
* A foreign word: It could be a word from a different language. If you can provide more context, like where you encountered this word, it might be possible to determine its origin and meaning.
Please provide more context so I can help you understand the meaning of "aEris."