Solanum dulcamara so·la·num·dulcamara uncommon noun 1. poisonous perennial Old World vine having violet flowers and oval coral-red berries; widespread weed in North America Synonymsbittersweetbittersweet nightshadeclimbing nightshadedeadly nightshadepoisonous nightshadewoody nightshadeSolanum dulcamara Related words Broader terms nightshade Parts Solanum WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.