Definition of rock rat:
(n) :
Certain members of the subfamily Murinae in the family Muridae, those in:
(n) :
Zyzomys, an Australian genus
(n) :
Aethomys, of Africa
(n) :
Petromyscus, a southwestern African genus in the subfamily Petromyscinae of the family Nesomyidae (more frequently referred to as rock mice)
(n) :
Aconaemys, a genus in Argentina and Chile, of the family Octodontidae:
(n) :
Petromus, an African genus often called dassie rats, of the family Petromuridae