SUMAC

also ~h noun Etymology: Middle English ~, from Anglo-French, ultimately from Arabic summāq Date: 14th century a material used in tanning and dyeing that consists of dried powdered leaves and flowers of various ~s, any of a genus ( Rhus ) of trees, shrubs, and woody vines of the cashew family that have leaves turning to brilliant colors in the autumn, small usually dioecious flowers, and spikes or loose clusters of red or whitish berries