Dictionary

poison sumac

noun

: a common bush in the eastern U.S. and Canada that causes a very itchy and painful rash on your skin if you touch it

Full Definition of POISON SUMAC

:  a swamp shrub (Toxicodendron vernix syn. Rhus vernix) chiefly of the eastern United States and Canada that has pinnate leaves, greenish flowers, and greenish white berries and produces an irritating oil —called also poison dogwood

First Known Use of POISON SUMAC

1817

poison sumac

noun poison su·mac \-ˈs(h)ü-ˌmak\   (Medical Dictionary)

Medical Definition of POISON SUMAC

:  an American swamp shrub of the genus Rhus (R. vernix synonym Toxicodendron vernix) that has smooth pinnate leaves, greenish flowers, and greenish white berries and produces an irritating oil—called also poison dogwood

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