Definitions of horsefly
  1. noun
    winged fly parasitic on horses
    synonyms: Hippobosca equina, horse tick
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    type of:
    hippoboscid, louse fly
    bloodsucking dipterous fly parasitic on birds and mammals
  2. noun
    large swift fly the female of which sucks blood of various animals
    synonyms: cleg, clegg, horse fly
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    type of:
    any of various large flies that annoy livestock
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