'black-legged tick' definitions:
Definition of 'black-legged tick'
(from WordNet)
noun
Parasitic on mice of genus Peromyscus and bites humans; principal vector for Lyme disease in eastern United States (especially New England); northern form was for a time known as Ixodes dammini (deer tick) [syn: Ixodes scapularis, black-legged tick]