lingonberry

[Swedish lingon, a kind of berry + BERRY.]

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This tiny cowberry (a member of the cranberry family) grows wild in the mountainous regions of Scandinavia, Russia, Canada and-in the United States-Maine. The tart red berries are available fresh only in the regions where they're grown. They can be purchased as sweet sauces or preserves, however, and make excellent accompaniments for pancakes, crêpes, puddings, etc.

The noun has 2 meanings:

Meaning #1: low evergreen shrub of high north temperate regions of Europe and Asia and America bearing red edible berries
  Synonyms: cowberry, mountain cranberry, lingenberry, lingberry, foxberry, Vaccinium vitis-idaea

Meaning #2: tart red berries similar to American cranberries but smaller
  Synonyms: mountain cranberry, cowberry, lowbush cranberry