* A misspelling or variation of another word. Perhaps you meant "sauce" or "souse"?
* A slang term or regional dialect word. If you heard it used in a specific context, it's possible it's a local expression.
* A word from another language. It could be a word from a foreign language that you've encountered.
To understand the meaning of "sose," please provide more context:
* Where did you hear this word?
* What was the sentence or conversation it was used in?
* What language do you think it might be from?
With more information, I can help you figure out the meaning of "sose".