cottontail n 1: common small rabbit of North America having greyish or brownish fur and a tail with a white underside; a host for Ixodes pacificus and Ixodes scapularis (Lyme disease ticks) [syn: {wood rabbit}, {cottontail}, {cottontail rabbit}]
Cottontail \Cot"ton*tail`\ (k[o^]t"t'n*t[=a]l`), n. (Zool.) The American wood rabbit ({Lepus sylvaticus}); -- also called {Molly cottontail}. [1913 Webster]