2 entries found for sumac.
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Main Entry: su·mac
Variant(s): also su·mach /sü-mak, shü-/
Function: noun 1: a material used in tanning and dyeing made of the leaves and other parts of sumac 2: any of a genus of trees, shrubs, and woody vines related to the cashew and having leaves turning to brilliant colors in autumn, spikes or loose clusters of red or whitish berries, and in some cases leaves or berries that are irritating to the skin -- compare POISON IVY, POISON OAK, POISON SUMAC [sumac illustration]