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Webster 1913 Edition

Noun.

[F., dim. of

prune

. See

Noun.

]

A kind of small and very acid French plum; – applied especially to the stoned and dried fruit.

prunelle ‎(plural prunelles)

a kind of small and very acid French plum, especially when stoned and dried, from Prunus spinosa (blackthorn, sloe).

From prune + -elle.

prunelle f ‎(plural prunelles)