What is grax in English?

"Grax" is not a standard English word. It's likely a misspelling or a word from another language.

To help me understand what you mean, could you provide more context? For example:

* Where did you see or hear "grax"? (a book, a website, a conversation)

* What was the situation? (was it a joke, a scientific term, a name?)

With more information, I can help you figure out what "grax" might mean!