* It's a misspelling: It could be a misspelling of a similar word, such as "banquet" or "banquet hall".
* It's a regional dialect word: It might be a word used in a specific region or language, but not widely known.
* It's a made-up word: It could be a word invented for a specific purpose, such as in a story or game.
To understand the meaning of "Banketi", you would need more context.
Please provide more information about where you encountered this word. For example, was it in a book, a conversation, or online? Knowing the source will help us determine the correct meaning.