WHITETHORN
whitethorn, English hawthorn, may, Crataegus laevigata, Crataegus oxycantha
(noun) thorny Eurasian shrub of small tree having dense clusters of white to scarlet flowers followed by deep red berries; established as an escape in eastern North America
Source: WordNet® 3.1
Etymology
Noun
whitethorn (plural whitethorns)
Crataegus monogyna, a hawthorn species native to Europe, northwest Africa and western Asia.
Bursaria spinosa, a small Australian shrub.
Vachellia constricta, formerly Acacia constricta, whitethorn acacia, a shrub in the family Fabaceae.
Ceanothus leucodermis, chaparral whitethorn, a shrub in the family Rhamnaceae.
Source: Wiktionary
White"thorn`, n. (Bot.)
Definition: The hawthorn.
Source: Webster’s Unabridged Dictionary 1913 Edition