Vaccinium pennsylvanicum

from WordNet (r) 3.0 (2006)

Vaccinium pennsylvanicum
    n 1: low-growing deciduous shrub of northeastern North America
         having flowers in compact racemes and bearing sweet dark
         blue berries [syn: {low-bush blueberry}, {low blueberry},
         {Vaccinium angustifolium}, {Vaccinium pennsylvanicum}]

from The Collaborative International Dictionary of English v.0.48

Blueberry \Blue"berry\, n. [Cf. {Blaeberry}.] (Bot.)
   The berry of several species of {Vaccinium}, an ericaceous
   genus, differing from the American huckleberries in
   containing numerous minute seeds instead of ten nutlets. The
   commonest species are {Vaccinium Pennsylvanicum} and
   {Vaccinium vacillans}. {Vaccinium corymbosum} is the tall
   blueberry.
   [1913 Webster]