It's a state of consciousness in which you are more in your thoughts or in a fanciful planning.
Yuriy shook himself from his reverie and proceed to cross the bridge.
by Woodensnake February 22, 2013
A daydream, when you dream during the day.
A good CD and song by Saves The Day is In Reverie.
by MaryofNazareth October 22, 2004