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Noun: poison ivy  'poy-zun 'I-vee
  1. Dermatitis resulting from contact with the poison ivy plant
    "my poison ivy is drying up"
  2. Climbing plant common in eastern and central United States with ternate leaves and greenish flowers followed by white berries; yields an irritating oil that causes a rash on contact
    - markweed, poison mercury, poison oak, Toxicodendron radicans, Rhus radicans

Type of: poisonous plant, Rhus dermatitis

Part of: genus Toxicodendron, Toxicodendron

Encyclopedia: Poison ivy