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An aromatic, spiny North American shrub or tree (Zanthoxylum americanum) whose dried bark has medicinal uses.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Plants) another name for prickly ash
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
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|Noun||1.||toothache tree - small deciduous aromatic shrub (or tree) having spiny branches and yellowish flowers; eastern North America|
prickly ash - any of a number of trees or shrubs of the genus Zanthoxylum having spiny branches
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