Definition of "bittersweet nightshade" []

• A poisonous climbing or trailing plant (Solanum dulcamara) native to Eurasia and a widespread weed in North America, having violet flowers with recurved corolla lobes and red berries. Also called bittersweet, deadly nightshade. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.