* Nickname or shortened form of a name: like "Rich", "Tisha", or "Timothy".
* Slang term: Depending on the region or context, it might be slang for something like "small", "little", or "tiny".
* Misspelling: It might be a misspelling of another word entirely.
To understand what "Tich" means, you need more context. Can you provide more information about where you saw or heard the word?