1. A wingless parasitic fly species that primarily infests sheep
   "The shepherd checked his flock for sheep-ticks during shearing";
   - sheep ked, sheep tick, Melophagus Ovinus, ked
    
2. Parasitic on sheep and cattle as well as humans; can transmit louping ill in sheep (acute viral disease of the nervous system); a vector for Lyme disease spirochete
   "The sheep-tick was found during routine inspection of the flock";
   - sheep tick, Ixodes ricinus

Derived forms: sheep tick, sheep-ticks, sheep ticks

Type of: hard tick, hippoboscid, ixodid, louse fly

Part of: genus Ixodes, genus Melophagus, Ixodes, Melophagus