poison sumac

Noun poison sumac has 2 senses

• poison sumac(n = noun.state) - dermatitis resulting from contact with a poison sumac plant;
is a kind of rhus dermatitis

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