noun Any of various shrubs or small trees of the genus Rhus and certain other genera in Anacardiaceae. particularly, one of species Rhus coriaria (tanner's sumac)
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noun particularly, one of species Rhus coriaria (tanner's sumac)
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noun Dried and chopped-up leaves and stems of a plant of the genus Rhus, particularly tanner's sumac (see sense 1), used for dyeing and tanning leather or for medicinal purposes.
noun A sour spice popular in the Eastern Mediterranean, made from the berries of tanner's sumac.
verb To apply a preparation of sumac to (an object), for example, to a piece of leather to tan it.