Definition of bilberry noun from the Oxford Advanced American Dictionary

 

bilberry

 noun
noun
NAmE//ˈbɪlˌbɛri//
 
(pl. bilberries, whortleberries)(also whortleberry)
 
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a small dark blue berry that grows on bushes on hills and in woods and can be eaten. The bush is also called a bilberry. compare blueberry
See the Oxford Advanced Learner's Dictionary entry: bilberry