It's possible it's:
* A misspelling: Is it a different word you're trying to spell? Could it be "bolivian" or "bolivars"?
* A regional dialect word: If you heard it somewhere, it might be a local term or slang. Could you provide more context?
* A made-up word: It could be a fictional name or term created for a specific purpose.
Please provide more information so I can help you with the pronunciation!