If you were to refer to buffalo in Hawaiian, you would likely use the English word "buffalo" or a descriptive phrase like:
* "Pipi ʻōpio" (meaning "wild cattle"), which is a common term for cattle that have escaped and become feral.
* "ʻŌpio nui" (meaning "large cattle"), which could be used to emphasize the size of buffalo.
It's important to remember that Hawaiian language is rich in specific terms for native flora and fauna. However, for introduced animals, the English word is often used, or a descriptive phrase is created.