nounplural noun bilberries
1A small dark blue edible berry.
2A hardy dwarf shrub closely related to the blueberry, with red drooping flowers and dark blue edible berries.
Genus Vaccinium, family Ericaceae: several species, including the tundra bilberry (V. uliginosum)
Late 16th century probably of Scandinavian origin; compare with Danish bøllebær.