1. blackthorn, sloe, Prunus spinosa, shrub, bush

usage: a thorny Eurasian bush with plumlike fruits

2. blackthorn, pear haw, pear hawthorn, Crataegus calpodendron, Crataegus tomentosa, hawthorn, haw

usage: erect and almost thornless American hawthorn with somewhat pear-shaped berries

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See also: blackthorn (Dictionary)