noun
1. dermatitis resulting from contact with a poison oak plant
• Hypernyms: ↑Rhus dermatitis
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
• Syn: ↑poison ivy, ↑markweed, ↑poison mercury, ↑Toxicodendron radicans, ↑Rhus radicans
• Hypernyms: ↑poisonous plant
• Member Holonyms: ↑Toxicodendron, ↑genus Toxicodendron
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noun [noncount]
1 : a common bush in the western U.S. that causes a very itchy and painful rash on your skin if you touch it
2 : ↑poison ivy
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a N American bush that causes painful spots on the skin when you touch it
Useful english dictionary. 2012.