jackrabbitEnglishMerriam-Webster Dictionaryjackrabbit nounjack·rab·bit | \ ˈjak-ˌra-bət \ any of several large hares (genus Lepus) of western North America having very long ears and long hind legs Definition : any of several large hares (genus Lepus) of western North America having very long ears and long hind legsFirst Known Use1863, in the meaning defined aboveHistory and Etymologyjack entry 1 (jackass) + rabbit; from its long earsjackrabbit nounjack·rab·bit | \ ˈjak-ˌra-bət \ any of several large hares (genus Lepus) of western North America having very long ears and long hind legs Definition : any of several large hares (genus Lepus) of western North America having very long ears and long hind legsFirst Known Use1863, in the meaning defined aboveHistory and Etymologyjack entry 1 (jackass) + rabbit; from its long ears