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sumac

[soo-mak, shoo-] /ˈsu mæk, ˈʃu-/
noun
1.
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.
2.
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.
3.
the wood of these trees.
Also, sumach.
Origin
1250-1300
1250-1300; Middle English < Medieval Latin < Arabic summāq
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for sumac
  • The first is traditional, vinegary mignonette, laced with sumac.
  • Smooth sumac is known to shade and replace prairie plants and endangered species.
  • There are several over-the-counter herbicides that will work on sumac and other broad leaf plants.
  • Bunches of fuzzy red fruit at the top of all sumac plants.
  • Three-leaf sumac is a montane shrub that can turn brilliant shades of crimson or gold in fall.
British Dictionary definitions for sumac

sumach

/ˈsuːmæk; ˈʃuː-/
noun
1.
any temperate or subtropical shrub or small tree of the anacardiaceous genus Rhus, having compound leaves, clusters of green flowers, and red hairy fruits See also poison sumach
2.
a preparation of powdered leaves of certain species of Rhus, esp R. coriaria, used in dyeing and tanning
3.
the wood of any of these plants
Word Origin
C14: via Old French from Arabic summāq
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for sumac
n.

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'-)
n.
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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