| Noun | 1. | genus Oryctolagus - Old World rabbits mammal genus - a genus of mammals family Leporidae, Leporidae - hares and rabbits European rabbit, Old World rabbit, Oryctolagus cuniculus - common greyish-brown burrowing animal native to southern Europe and northern Africa but introduced elsewhere; widely domesticated and developed in various colors and for various needs; young are born naked and helpless |