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or sumach

[soo-mak, shoo-] /ˈsu mæk, ˈʃu-/
any of several shrubs or small trees belonging to the genus Rhus of the cashew family, having milky sap, compound leaves, and small, fleshy fruit.
a preparation of the dried and powdered leaves, bark, etc., of certain species of Rhus, especially R. coriaria of southern Europe, used especially in tanning.
the wood of these trees.
Origin of sumac
1250-1300; Middle English < Medieval Latin < Arabic summāq Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Word Origin and History for sumac

c.1300, "preparation of dried, chopped leaves of a plant of the genus Rhus" (used in tanning and dyeing and as an astringent), from Old French sumac (13c.), from Medieval Latin sumach, from Arabic summaq, from Syrian summaq "red." Later applied to a North American plant species.

Online Etymology Dictionary, © 2010 Douglas Harper
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sumac in Medicine

sumac su·mac or su·mach (sōō'māk, shōō'-)
Any of various shrubs or small trees of the genus Rhus, having compound leaves, clusters of small greenish flowers, and usually red, hairy fruit. Some species, such as the poison ivy and poison oak, cause an acute itching rash on contact.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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