A pipe dream is a fantastic but vain hope, or something that could never come true although you would wish for it. The origin is a reference to the fantasies that occur when smoking an opium pipe.
Well, it depends on the dream. For example: If you have a dream where you and your best friend were arguing, it usually means that you are having a bit of friend drama with that person. If you have a...
A dream about having a dream would be a metaphor, telling the dreamer that he/she needs to "wake up" in some area of real life. The "dream" would be a symbol for romantic or sentimental ideas that...