blackthorn

blackthorn

[blak-thawrn]
noun
1.
a shrub or tree of the genus Crataegus, as C. calpodendron.
2.
a walking stick made of a blackthorn tree or shrub.
3.
Also called sloe. a much-branched, thorny, Old World shrub, Prunus spinosa, having white flowers and small plumlike fruits.

Origin:
1350–1400; Middle English blak thorn. See black, thorn

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World English Dictionary
blackthorn (ˈblækˌθɔːn)
 
n
1.  Also called: sloe a thorny Eurasian rosaceous shrub, Prunus spinosa, with black twigs, white flowers, and small sour plumlike fruits
2.  a walking stick made from its wood

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

blackthorn

(Prunus spinosa), spiny shrub, of the rose family (Rosaceae), native to Europe but cultivated in other regions. The name is also applied to Crataegus calpodendron (or C. tomentosa), commonly called pear haw, another shrub or small tree of the rose family. P. spinosa usually grows less than 3.6 metres (12 feet) tall and has numerous, small leaves. Its dense growth makes it suitable for hedges. The white flowers, about 2 centimetres (0.8 inch) in diameter, appear before the leaves. The bluish-black, tart-flavoured fruit is about 2 cm in diameter and is used to flavour sloe gin.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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