jackalopeEnglishOxford New American Dictionaryjackalope /ˈjakəˌlōp, ˈdʒækəˌloʊp / ▸ noun a mythical animal depicted as a hare or rabbit with horns, said to exist in parts of North America: some people think jackalopes are creations of taxidermists. – ORIGIN 1950s : blend of jackrabbit and antelope.