bilberry

from WordNet (r) 3.0 (2006)

bilberry
    n 1: erect European blueberry having solitary flowers and blue-
         black berries [syn: {bilberry}, {whortleberry},
         {whinberry}, {blaeberry}, {Viccinium myrtillus}]
    2: erect blueberry of western United States having solitary
       flowers and somewhat sour berries [syn: {bilberry}, {thin-
       leaved bilberry}, {mountain blue berry}, {Viccinium
       membranaceum}]
    3: blue-black berries similar to American blueberries [syn:
       {bilberry}, {whortleberry}, {European blueberry}]

from The Collaborative International Dictionary of English v.0.48

Bilberry \Bil"ber*ry\, n.; pl. {Bilberries}. [Cf. Dan.
   b["o]lleb[ae]r bilberry, where b["o]lle is perh. akin to E.
   ball.]
   1. (Bot.) The European whortleberry ({Vaccinium myrtillus});
      also, its edible bluish black fruit.
      [1913 Webster]

            There pinch the maids as blue as bilberry. --Shak.
      [1913 Webster]

   2. (Bot.) Any similar plant or its fruit; esp., in America,
      the species {Vaccinium myrtilloides}, {Vaccinium
      c[ae]spitosum} and {Vaccinium uliginosum}.
      [1913 Webster]