* It's a misspelling: There might be a similar word you're thinking of, like "singcot" (a type of bed) or "singed" (burnt slightly).
* It's a regional term: The word could be specific to a particular dialect or region. If you can provide more context, such as where you heard it, it might be easier to identify.
* It's a made-up word: It's possible that "singgog" is a made-up word, perhaps from a book, movie, or game.
Could you please provide more information about where you encountered this word? This will help me understand what you're referring to and give you a more accurate answer.