blackthorn
black.thorn \'blak-.tho.(*)rn\ n 1: a European spiny plum (Prunus spinosa) with hard wood and small wh ite flowers 2: any of several American hawthorns
Webster's English Dictionaryblack.thorn \'blak-.tho.(*)rn\ n 1: a European spiny plum (Prunus spinosa) with hard wood and small wh ite flowers 2: any of several American hawthorns