prickly ash

noun
1.
Also called northern prickly ash, toothache tree. a citrus shrub or small tree, Zanthoxylum americanum, having aromatic leaves and usually prickly branches.
2.
Hercules-club ( def 2 ).

Origin:
1700–10, Americanism

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
prickly ash
 
n
Also called: toothache tree a North American rutaceous shrub or small tree, Zanthoxylum americanum, having prickly branches, feathery aromatic leaves, and bark used as a remedy for toothache

Collins English Dictionary - Complete & Unabridged 10th Edition
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Encyclopedia Britannica
Encyclopedia

prickly ash

(species Aralia spinosa), prickly-stemmed shrub or tree, of the ginseng family (Araliaceae), that can reach a height of 15 m (about 50 feet). Its leaves are large, with leaflets arranged feather-fashion and often prickly. The angelica tree is native to low-lying areas from Delaware to Indiana, south to Florida, and as far west as Texas.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Example sentences
Shrubs are invading the openings with gray dogwood, smooth sumac, and prickly ash forming dense thickets in places.
White-tailed deer seek sanctuary from winter winds in thick patches of cedar, willow, plum and prickly ash.
Invasive shrubs such as honeysuckle, buckthorn, and prickly ash are found in scattered pockets.
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