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poison oak
 
Noun poison oak has 2 senses
  1. poison oak - dermatitis resulting from contact with a poison oak plant
    --1 is a kind of     Rhus dermatitis
  2. poison ivy, markweed, poison mercury, poison oak, Toxicodendron radicans, Rhus radicans - 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
    --2 is a kind of poisonous plant
    --2 is a member of Toxicodendron, genus Toxicodendron
poison bush poison camas poison dogwood poison gas poison hemlock poison ivy poison mercury poison milkweed poison oak poison parsley poison pea poison pill poison sumac poisonberry poisoned poisoner poisoness

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