* It's a misspelling: There might be a similar word you're thinking of, like "Einheimischer" in German, meaning "native" or "local."
* It's a regional dialect word: There's a chance it's a word used in a specific region or community.
* It's a made-up word: It could be a fictional word or a personal invention.
To understand what "enheimer" might mean, you need to provide more context:
* Where did you encounter this word? (Book, website, conversation, etc.)
* What was the surrounding text or conversation about?
* What are your thoughts or assumptions about the word's meaning?
With more information, I might be able to help you figure out what it means.