reverie

A state of abstracted musing; daydreaming.

A daydream.

A state of mental abstraction in which more or less aimless fancy predominates over the reasoning faculty; dreamy meditation; fanciful musing.

A waking dream; a brown study; an imaginative, fanciful, or fantastic train of thought; a day-dream.

The object or product of reverie or idle fancy; a visionary scheme, plan, aim, ideal, or the like; a dream.