A hawthorn is a small tree which has sharp thorns and produces white or pink flowers.
Much of the track had become overgrown with hawthorn.
hawthorn in British English
(ˈhɔːˌθɔːn)
noun
any of various thorny trees or shrubs of the N temperate rosaceous genus Crataegus, esp C. oxyacantha, having white or pink flowers and reddish fruits (haws)
Also called (in Britain): may, may tree, mayflower
Word origin
Old English haguthorn from haga hedge + thorn thorn; related to Old Norse hagthorn, Middle High German hagendorn, Dutch haagdoorn
hawthorn in American English
(ˈhɔˌθɔrn)
noun
any of a group of thorny shrubs and small trees (genus Crataegus) of the rose family, with white, pink, or red flowers and usually red fruits (haws) resembling miniature cherries
Word origin
lit., hedge thorn < ME hagethorn < OE hagathorn < haga, hedge, haw1 + thorn, akin to Ger hagedorn