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

(Prunus spinosa) Small spiny shrub commonly used in hedging. The fruit are known as sloes and have several uses.

The Blackthorn is a large shrub or a small tree of the genus Prunus, botanically Prunus spinosa. Its fruit is called the sloe, or in the Scots language, slaes.