Sheep tick Meaning, Definition & Usage

  1. noun wingless fly that is an external parasite on sheep and cattle
    sheep ked; sheep-tick; Melophagus Ovinus.
  2. noun 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
    Ixodes ricinus; sheep-tick.

WordNet

Definitions
  1. (Zoöl.), a wingless parasitic insect (Melophagus ovinus) belonging to the Diptera. It fixes its proboscis in the skin of the sheep and sucks the blood, leaving a swelling. Called also sheep pest, and sheep louse.

Webster 1913