blueberry

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. Any of numerous plants of the genus Vaccinium, having white to reddish, urn-shaped or tubular flowers and edible blue to blue-black berries.
2. n. The fruit of any of these plants.

Century Dictionary and Cyclopedia

1. n. In America: The fruit of several species of Vaccinium, ordinarily distinguished from the various kinds of huckleberry by its blue color and smaller seeds. The swamp or tall blueberry is the Vaccinium corymbosum; the low blueberry, V. vacillans; and the dwarf blueberry, V. Pennsylvanicum. See bilberry.
2. n. Another name of the cohosh, Caulophyllum thalictroides.
3. n. In Australia: The fruit of the blueberry-tree, or the tree itself.
4. n. The berry-like fruit of Dianella lævis, of the lily family.

Wiktionary

1. n. An edible round berry belonging to the cowberry family. (A botanically false berry.) It has flared "crowns" at the end that turn blue on ripening.
2. n. The shrub of the above-mentioned berry.
3. n. A dark blue colour.
4. adj. Of a dark blue colour.

GNU Webster's 1913

1. n. The berry of several species of Vaccinium, an ericaceous genus, differing from the American huckleberries in containing numerous minute seeds instead of ten nutlets. The commonest species are Vaccinium Pennsylvanicum and Vaccinium vacillans. Vaccinium corymbosum is the tall blueberry.

WordNet 3.0

1. n. any of numerous shrubs of the genus Vaccinium bearing blueberries
2. n. sweet edible dark-blue berries of either low-growing or high-growing blueberry plants