One dictionary defines a dream as

1. mental activity, usually an imagined series of events, occurring during sleep.

2. a sequence of imaginative thoughts indulged in while awake; a daydream; or fantasy.

3. a person or thing seen or occurring in a dream

4. a cherished hope; aspiration.

5. a vain hope or imagination

6. a person or thing that is as pleasant or seemingly unreal as a dream.

All of these definitions I esteem.
However much on the subject has not been told
Therefore allow me to be so bold
As it is the Creator