Definition of 'sheep tick'

Noun

1. wingless fly that is an external parasite on sheep and cattle
      Synonyms: sheep ked sheep-tick Melophagus Ovinus
2. parasitic on sheep and cattle as well as humans; can transmit looping ill in sheep (acute viral disease of the nervous system); a vector for Lyme disease spirochete
      Synonyms: sheep-tick Ixodes ricinus

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