Could you please provide more context or information? Perhaps you are thinking of a specific name or place?
For example:
* Is it a personal name? If so, it might be a variation of a Māori name or a name adopted from another language.
* Is it a place name? If so, it could be a Māori name for a specific location.
* Is it a word in another language? The word "Tehana" might have a different meaning in another language.
Please provide more details so I can help you understand the meaning of "Tehana."