revery

noun, plural rev·er·ies.

1. reverie.

noun

1. a state of dreamy meditation or fanciful musing: lost in reverie.
2. a daydream.
3. a fantastic, visionary, or impractical idea: reveries that will never come to fruition.
4. Music. an instrumental composition of a vague and dreamy character.

noun plural -eries

1. an act or state of absent-minded daydreamingto fall into a reverie
2. a piece of instrumental music suggestive of a daydream
3. archaic a fanciful or visionary notion; daydream

n.

mid-14c., reuerye, “wild conduct, frolic,” from Old French reverie, resverie “revelry, raving, delirium” (Modern French rêverie), from resver “to dream, wander, rave” (12c., Modern French rêver), of uncertain origin (also the root of rave). Meaning “daydream” is first attested 1650s, a reborrowing from French. As a type of musical composition, it is attested from 1880. Related: Reverist.