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.

There pinch the maids as blue as bilberry. --Shak.

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

Source: Webster's Revised Unabridged Dictionary (1913)