Definitions for "Blackthorn"
Keywords:  spinosa, sloe, prunus, thorny, shrub
A spreading thorny shrub or small tree (Prunus spinosa), with blackish bark, and bearing little black plums, which are called sloes; the sloe.
A Druid sacred tree. It's thorns were used in negative magic.
a thorny Eurasian bush with plumlike fruits
A species of Cratægus or hawthorn (Cratægus tomentosa). Both are used for hedges.
erect and almost thornless American hawthorn with somewhat pear-shaped berries