柯林斯詞典poison oak 1. N-UNCOUNT Poison oak is a plant, similar to poison ivy, that causes a rash or skin problems if you touch it. 毒櫟[美國英語] We walked through poison oak and got scratched by thorns. 我們從毒櫟中穿過,身上被尖刺刮破。 返回 poison oak