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}.