Noun: poison ash
- Smooth American swamp shrub with pinnate leaves and greenish flowers followed by greenish white berries; yields an irritating oil
"Hikers carefully avoided the poison ash in the wetland";
- poison dogwood, poison sumac, Toxicodendron vernix, Rhus vernix
Derived forms: poison ashes
Type of: poisonous plant
Part of: genus Toxicodendron, Toxicodendron
Encyclopedia: Poison ash