"sloe" in the noun sense
1. Allegheny plum, Alleghany plum, sloe, Prunus alleghaniensis
wild plum of northeastern United States having dark purple fruits with yellow flesh
2. blackthorn, sloe, Prunus spinosa
a thorny Eurasian bush with plumlike fruits
small sour dark purple fruit of especially the Allegheny plum bush
Source: WordNet® (An amazing lexical database of English)
Princeton University "About WordNet®."
WordNet®. Princeton University. 2010.
View WordNet® License