* It's a misspelling: You might be thinking of a similar word, like "pantomime" or "diminish".
* It's a slang term: It could be a regional or niche slang term.
* It's a made-up word: Perhaps it's a word from a fictional world or a specific context.
Could you provide more context?
For example:
* Where did you encounter this word?
* What was the surrounding text or conversation?
With more information, I can help you figure out the meaning of "panimdim".