To dream of a black hole represents a obstacle in your life that you feel is all-consuming, destructive, and heartless. You may feel that there is no stopping a destructive or wasteful presence in your life. A hopeless disaster that is unstoppable. A hopeless waste that is unstoppable. Feeling that a destructive force in your life will overcome you.
Example: A man dreamed of a black hole. In waking life he believed that his illness was impossible to recover from and that it would overcome him.