Bil"ber*ry (?), n.; pl. Bilberries (). [Cf. Dan. bollebaer bilberry, where bolle is perh. akin to E. ball.]
The European whortleberry (Vaccinium myrtillus); also, its edible bluish black fruit.
There pinch the maids as blue as bilberry.
2. Bot. Any similar plant or its fruit; esp., in America, the species Vaccinium myrtilloides, V. caespitosum and V. uliginosum.
© Webster 1913.