What does "huckleberry" mean?

Huckleberry: (a) The edible black or dark blue fruit of several species of the American genus Gaylussacia, shrubs nearly related to the blueberries (Vaccinium), and formerly confused with them. The commonest huckelberry comes from G. resinosa. (b) The shrub that bears the berries. Called also whortleberry. Squaw huckleberry. See Deeberry.