Noun sheep tick has 2 senses
- sheep ked, sheep-tick, sheep tick, Melophagus Ovinus - wingless fly that is an external parasite on sheep and cattle
--1 is a kind of louse fly, hippoboscid
--1 is a member of Melophagus, genus Melophagus
- sheep-tick, sheep tick, Ixodes ricinus - 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
--2 is a kind of hard tick, ixodid
--2 is a member of Ixodes, genus Ixodes
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