western poison oak

Thesaurus

Noun

1.

western poison oak - poisonous shrub of the Pacific coast of North America that causes a rash on contactRhus diversiloba, Toxicodendron diversilobumgenus Toxicodendron, Toxicodendron - in some classifications: comprising those members of the genus Rhus having foliage that is poisonous to the touch; of North America and northern South Americapoisonous plant - a plant that when touched or ingested in sufficient quantity can be harmful or fatal to an organism