thorn apple

thorn apple

any poisonous plant belonging to the genus Datura, of the nightshade family, the species of which bear capsules covered with prickly spines, especially the jimson weed, D. stramonium.
the fruit of certain hawthorns of the genus Crataegus.

1570–80 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
thorn apple
1.  See also stramonium US and Canadian name: jimson weed a poisonous solanaceous plant, Datura stramonium, of the N hemisphere, having white funnel-shaped flowers and spiny capsule fruits
2.  any other plant of the genus Datura
3.  the fruit of certain types of hawthorn

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Encyclopedia Britannica

thorn apple

annual, herbaceous, tropical plant (Datura stramonium) of the potato family (Solanaceae) that has become an introduced weed throughout much of the Northern Hemisphere. The plant was used by Algonquin Indians in eastern North America as a hallucinogen and intoxicant. The leaves contain potent alkaloids (hyoscamine and hyoscine), and the plant has been used to develop a drug (stramonium) for treating asthma.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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