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poison oak
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Tweet n. 1. Either of two plants, Toxicodendron pubescens, a shrub of the southeast United States, or T. diversilobum, a shrub or vine of western North America, having compound leaves with three lobed or toothed leaflets, and causing a rash on contact. 2. See poison ivy. 3. A skin rash caused by contact with one of these plants.  (click for a larger image) poison oakwestern poison oak Toxicodendron diversilobum |
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