'Crataegus tomentosa' definitions:

Definition of 'Crataegus tomentosa'

noun

Erect and almost thornless American hawthorn with somewhat pear-shaped berries [syn: blackthorn, pear haw, pear hawthorn, Crataegus calpodendron, Crataegus tomentosa]

Definition of 'Crataegus tomentosa'

From: GCIDE

Blackthorn \Black"thorn`\, n. (Bot.) (a) A spreading thorny shrub or small tree ({Prunus spinosa}), with blackish bark, and bearing little black plums, which are called sloes; the sloe. (b) A species of Crat[ae]gus or hawthorn ({Crat[ae]gus tomentosa}). Both are used for hedges. [1913 Webster]

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