chokecherry

1. A deciduous North American shrub or small tree (Prunus virginiana) in the rose family, having elongate clusters of small white flowers and astringent, dark red to nearly black fruit.
2. The fruit of this plant.

[From its bitter fruit.]

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Any of several varieties of wild cherries native to North America. These small cherries turn from red to almost black when mature. They're very astringent and, though not good for out-of-hand eating, make excellent jams and jellies. Chokeberries are the inedible fruit of an ornamental shrub. See also cherry.

prunus virginiana.

The noun has 2 meanings:

Meaning #1: the fruit of the chokecherry tree

Meaning #2: a common wild cherry of eastern North America having small bitter black berries favored by birds
  Synonyms: chokecherry tree, Prunus virginiana