Webster's English Dictionary

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nightshade

night.shade \'ni-t-.sha-d\ n 1: any of a genus (Solanum of the family 
   Solanaceae, the nightshade f amily) of herbs, shrubs, and trees with 
   alternate leaves, cymose flowers, and fruits that are berries including 
   poisonous weeds, various ornamentals, and important crop plants (as the 
   potato and eggplant) 2: BELLADONNA  3: HENBANE