rock and ryen.1. A cocktail made of rye whiskey sweetened by rock candy and sometimes including fruit. In the 1800s, it was reputed to aid in digestion.2. A whiskey-based liqueur flavored similarly to this cocktail, often with rock candy in the bottle.American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.