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Definition of blackfly noun from the Oxford Advanced Learner's Dictionary

blackfly

noun
 
/ˈblækflaɪ/
 
/ˈblækflaɪ/
(plural blackfly or blackflies)
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  1. a small black or dark green insect that damages plantsTopics Insects, worms, etc.c2
  2. (also black fly)
    a small black fly that bites humans and animals and drinks their blood Topics Insects, worms, etc.c2
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adverb
 
 
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