ALL meanings of poison sumac
poi·son su·mac
P p - noun poison sumac a shrub or small tree, Rhus vernix (or Toxicodendron vernix), of swampy areas of the eastern U.S., having pinnate leaves and causing severe dermatitis when touched by persons sensitive to it. 1
- noun poison sumac a swamp plant (Rhus vernix) of the cashew family, with greenish-white flowers, hanging clusters of small grayish fruit, and leaves made up of 7 to 13 leaflets: it can cause a severe rash on contact 0