Emily Dickinson Lexicon

REV'ER-Y, n. [Fr. rêverie, from rêver, to dream, to rave, to be light-headed. It is often written in English as in French.]

1. Properly, a raving or delirium; but its sense, as generally used, is a loose or irregular train of thoughts, occurring in musing or meditation; wild, extravagant conceit of the fancy or imagination. There are reveries and extravagancies which pass through the minds of wise men as well as fools. – Addison.
2. A chimera; a vision.
3. In medicine, voluntary inactivity of the whole or the greater part of the external senses to the impressions of surrounding objects, during wakefulness. – Good.