English hawthorn in WordNet English dictionary

1. 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
   whitethorn  English hawthorn  may  Crataegus laevigata  Crataegus oxycantha 
   
2. European hawthorn having deeply cleft leaves and bright red fruits; widely cultivated in many varieties and often grown as impenetrable hedges; established as an escape in eastern North America
   English hawthorn  Crataegus monogyna