Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
sheep-tick is a noun meaning "wingless fly that is an external parasite on sheep and cattle". It carries 2 recorded senses.
wingless fly that is an external parasite on sheep and cattle
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
Definitions, synonyms and semantic relations for sheep-tick come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.