sumac

1. Sumac
   (Bot) Any plant of the genus Rhus, shrubs or small trees with usually compound leaves and clusters of small flowers. Some of the species are used in tanning, some in dyeing, and some in medicine. One, the Japanese Rhus vernicifera, yields the celebrated Japan varnish, or lacquer.
2. Sumac
   The powdered leaves, peduncles, and young branches of certain species of the sumac plant, used in tanning and dyeing.

1. (n) sumac
   One of numerous shrubs or small trees of the genus Rhus. See def. 2, and phrases below.
2. (n) sumac
   A product of the dried and ground leaves of certain shrubs or trees of the genus Rhus or of other genera, much used for tanning light-colored leathers and to some extent for dyeing. The leading source of this product is the tanners' or Sicilian sumac, Rhus Coriaria, of southern Europe, cultivated in Sicily and also in Tuscany. The Venetian sumac, smoke-tree, or wig-tree, R. Cotinus, is grown in Tyrol for the same purpose. (See smoke-tree and scotino.) In Spain various species supply a similar substance, and in Algeria the leaves of R. pentaphylla, five-leaved or Tezera sumac, are applied to the manufacture of morocco. In France a tree of another genus, Coriaria myrtifolia, myrtle-leaved sumac, furnishes a similar product. (See Coriaria.) In the United States, particularly in Virginia, the leaves of several wild sumacs are now gathered as tan-stock—namely, of the dwarf, the smooth, the stag-horn, and perhaps the Canadian sumac. These contain more tannin than the European, but, at least with careless gathering, they make an inferior leather.
3. sumac
   In leather manufacturing, to treat with sumac.

1. (n) Sumac
   sū′mak a genus of small trees and shrubs of the natural order Anacardiaceæ—the leaves of some species used in dyeing.

sumach shumac

bush shrub wood

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Ailanthus altissima Anacardiaceae Anacardiaceous Basan cashew dogwood family Anacardiaceae fragrant sumac Fustet genus Rhodosphaera Japan tallow Japan varnish Japan wax lemon sumac mango tree morocco ooze poison dogwood poison ivy poison sumac Rhodosphaera Rhus Rhus aromatica roan Saffian shumac Skiver Stag-horn sumac sumac family sumach tanning tree of heaven tree of the gods vinegar tree

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