To dream of an eight ball represents a final obstacle to getting the closure you want in a situation. That last thing you need to finish something off or end a problem.
Alternatively, an eight ball may reflect an opportunity for closure that is at risk. Feeling the pressure or danger of not dealing with a problem fast enough. Feeling that someone else might beat you out of your last chance. A sign that you need to believe in yourself more.
Example: A woman dreamed of seeing an 8 ball. In waking life she and her husband were having financial difficulties that they felt they could never resolve. There always seemed to be one problem left each time progress was made.