Definition of poison oak in English:

poison oak


  • A North American climbing shrub of the cashew family, closely related to poison ivy and having similar properties.

    • ‘Then after about the 300th warning about poison oak, Rob came over again and pointed out this giant cow chilling in the shade.’
    • ‘The good news is there is no poison ivy or poison oak in Newfoundland.’
    • ‘The late Alabama folk herbalist Tommie Bass used plantain for sunburn, stings, poison ivy and poison oak.’
    • ‘Contact eczema is the rash from poison ivy or poison oak, for example.’
    • ‘He notes that although it was just water, there were dead fish and poison oak contaminating the water all over the course.’
    • ‘Seventh is poison oak, and what can be said about poison oak?’
    • ‘Common woody plants in the understory were toyon, California hazel, and 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 nut's hard ash-coloured shell contains toxic substances similar to what is found in poison ivy and poison oak.’
    • ‘Ivy Block is applied at least 15 minutes before exposure to poison ivy or poison oak.’
    • ‘From a manicured picnic area, you hike down a trail that's steep, skinny, and edged with poison oak, but the route is mercifully short - about 0.25 mile.’
    • ‘‘Watch out for the poison oak,’ he warns, pointing to thick clumps along the deer trail we are following.’
    • ‘To dwell on the dearth of bonus material any further would be like rubbing poison oak into a paper cut.’
    • ‘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.’
    • ‘It's a moderate, 2-mile round-trip; watch for poison oak.’
    • ‘The three girls entered the trees, avoiding the thorns and poison oak that scattered around the ground and branches, to reveal a small, grassy clearing.’
    • ‘Wear long pants and sleeves when the weather permits, and learn how to take off your clothes when you've been out in the poison oak.’
    • ‘Symptoms, also caused by rubber accelerators and chemical additives, include redness, itching, crusting, and blisters, resembling the reaction to poison ivy or poison oak.’
    • ‘Watch out for poison oak as it is very prolific in the area.’
    • ‘And you can get even better protection by avoiding poison ivy all together, as well as its cousins poison sumac and poison oak.’