Source : Webster's Revised Unabridged Dictionary (1913)

Dulcamara \Dul`ca*ma"ra\, n. [NL., fr. L. dulcis sweet + amarus
   bitter.] (Bot.)
   A plant ({Solanum Dulcamara}). See {Bittersweet}, n., 3
   (a) .

Dulcamarin \Dul`ca*ma"rin\, n. (Chem.)
   A glucoside extracted from the bittersweet ({Solanum
   Dulcamara}), as a yellow amorphous substance. It probably
   occasions the compound taste. See {Bittersweet}, 3
   (a) .

Felonwort \Fel"on*wort`\, n. (Bot.)
   The bittersweet nightshade ({Solanum Dulcamara}). See
   {Bittersweet}.

Source : WordNet®

Solanum dulcamara
     n : poisonous perennial Old World vine having violet flowers and
         oval coral-red berries; widespread weed in North America
         [syn: {bittersweet}, {bittersweet nightshade}, {climbing
         nightshade}, {deadly nightshade}, {poisonous nightshade},
          {woody nightshade}]