Plural form of bilberry; small dark blue berries similar to blueberries that grow wild in northern regions.
From 'bilberry,' which comes from Old Norse 'bil' (the berry itself). The word entered Middle English and has been used for centuries to describe these nutritious wild fruits.
Bilberries are nutritional superstars packed with antioxidants, and during World War II, RAF pilots ate bilberry jam because pilots believed it improved their night vision—a claim that actually has scientific support!
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