sheep-tick
n 1: wingless fly that is an external parasite on sheep and
cattle [syn: sheep ked, sheep tick, Melophagus
Ovinus]
2: 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: sheep tick, Ixodes ricinus]