poison ash

Noun poison ash has 1 sense

• poison ash(n = noun.plant) poison dogwood, poison sumac, rhus vernix, toxicodendron vernix - smooth American swamp shrub with pinnate leaves and greenish flowers followed by greenish white berries; yields an irritating oil; Array
is a member of genus toxicodendron, toxicodendron
is a kind of poisonous plant