Noun: poison ivy 'poy-zun 'I-vee
- 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
"Hikers learn to identify and avoid poison ivy to prevent painful rashes";
- markweed, poison oak [non-standard], Toxicodendron radicans, Rhus radicans
- Dermatitis resulting from contact with the poison ivy plant
"my poison ivy is drying up"
Derived forms: poison ivies
Type of: poisonous plant, Rhus dermatitis
Part of: genus Toxicodendron, Toxicodendron
Encyclopedia: Poison ivy