It's possible that:
* It's a newly emerging term: Maybe it's a slang word or a term being used in a specific online community or subculture.
* It's a misspelling: It could be a misspelling of a similar word with a known meaning.
If you can provide more context:
* Where did you encounter this word?
* What was the context?
With more information, I might be able to help you understand what "womanance" might mean.