| sheep ked | (n) wingless fly that is an external parasite on sheep and cattle, Syn. sheep tick, sheep-tick, Melophagus Ovinus |
| sheep-tick | (n) 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, Syn. Ixodes ricinus, sheep tick |