mountain cranberry

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A low creeping evergreen shrub (Vaccinium vitis-idaea), native to northern North America and Eurasia and having drooping clusters of small white or pinkish flowers.
• noun The edible red berry of this plant, used to make sauces, jams, and preserves.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun low evergreen shrub of high north temperate regions of Europe and Asia and America bearing red edible berries
• noun tart red berries similar to American cranberries but smaller