Blackthorn
Pronunciation : Black"thorn`, n. (Bot.) (a) A spreading thorny shrub or small tree (Prunus spinosa), with blackish bark, and bearing little black plums
Part of Speech : which
Definition :
are called sloes; the sloe. (b) A species of Crat?gus or hawthorn (C. tomentosa). Both are used for hedges.
Source : Webster's Unabridged Dictionary, 1913