What does huikau mean?

"Huikau" is not a word in any major language. It is possible that you may have misheard or misspelled the word.

Could you please provide more context or information? For example:

* Where did you hear this word? (In a movie, a book, a conversation, etc.)

* What was the context of the word? (What was being discussed?)

* What language do you think it might be from?

With more information, I can try to help you find the meaning of this word.