* A misspelling: Perhaps you meant "more", "my", "our", "moor", or something else entirely.
* A slang term: "Mur" could be a slang term used in a specific region or community.
* A shortened form: "Mur" could be a shortened version of a longer word like "murmur".
* An acronym: It might be an acronym for something, although without more context it's impossible to say.
To understand the meaning of "mur", I need more information! Please provide some context:
* Where did you see or hear this word?
* What was the surrounding text or conversation?
With more information, I can help you figure out what "mur" means.