1. A state of abstracted musing; daydreaming.
2. A daydream: "I felt caught up in a reverie of years long past" (William Styron).

[Middle English, revelry, from Old French, from rever, to dream.]

The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.