Definition of poison oak in English:

poison oak

Line breaks: poi¦son oak


  • A North American climbing shrub related to poison ivy and having similar properties.
    • Rhus toxicodendron, family Anacardiaceae
    More example sentences
    • She says that for centuries, plantain has been used to provide immediate relief from mosquito bites, hornet stings and the painful itching of poison ivy or poison oak.
    • If a child touches poison ivy, poison oak or a sumac plant, causing an itchy rash with pin-size clear blisters, give him a thorough bath to remove the oily resin that caused the reaction.
    • The late Alabama folk herbalist Tommie Bass used plantain for sunburn, stings, poison ivy and poison oak.

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