* A nickname or shortened version of a name: Like "Molly" or "Mulligan."
* Slang or regional term: The meaning could be specific to a particular region or group.
* Misspelling: It might be a typo for a different word.
To understand the meaning of "mully" in your context, please provide more information.
For example:
* Where did you hear or see the word? (e.g., a book, a conversation, online)
* What was the context? (e.g., the surrounding words, the topic of discussion)
With more context, I can help you figure out what "mully" means.