What does the word busha mean in polish?

The word "busha" doesn't exist in Polish. It's possible that you're thinking of a similar-sounding word or that there's a typo.

Could you please clarify what you're looking for?

For example:

* Is there a word that sounds like "busha"?

* Did you mean another word with a similar spelling?

* What context are you using this word in?

Once you provide more information, I can help you find the correct Polish word.