Definitions of dream:

• noun:   a state of mind characterized by abstraction and release from reality

  Example: "He went about his work as if in a dream"

• noun:   a series of mental images and emotions occurring during sleep

  Example: "I had a dream about you last night"

• noun:   imaginative thoughts indulged in while awake

  Example: "He lives in a dream that has nothing to do with reality"

• noun:   someone of something wonderful

  Example: "This dessert is a dream"

• noun:   a fantastic but vain hope (from fantasies induced by the opium pipe)

  Example: "I have this pipe dream about being emperor of the universe"

• noun:   a cherished desire
• verb:   experience while sleeping

  Example: "She claims to never dream"

• verb:   have a daydream; indulge in a fantasy