1. (

• blackthorn ,
• sloe ,
• Prunus_spinosa

) a thorny Eurasian bush with plumlike fruits ;

2. (

• blackthorn ,
• pear_haw ,
• pear_hawthorn ,
• Crataegus_calpodendron ,
• Crataegus_tomentosa

) erect and almost thornless American hawthorn with somewhat pear-shaped berries ;