It could be a reference to:
* A type of rail: Perhaps a specialized type of rail used in Hawaii for transportation or construction.
* A business or organization: A company or organization with a name that incorporates "Hawaiian Rail."
* A product or service: A product or service marketed in Hawaii that uses the term "Hawaiian Rail."
* A cultural reference: It might refer to a specific tradition or practice related to trains in Hawaii.
To get a better understanding of what "Hawaiian Rail" means, please provide more context. For example:
* Where did you encounter this phrase?
* What was the conversation or situation surrounding it?
* Are there any other details or clues you can provide?
With more information, I can give you a more accurate and helpful answer.