spiny rat

Short definition from Wiktionary

Noun

1. 1
   Any of certain caviomorph rodents of the family Echimyidae of Neotropical spiny rats, especially of genus Proechimys, that resemble rats and have stiff, pointed hairs, or spines.
2. 2
   Any of certain genera of family Muridae of rodents: Any member of two species of genus Rattus.
3. 3
   Any of certain genera of family Muridae of rodents: Any member of the species of genus Maxomys (sometimes considered a subgenus of Rattus).
4. 4
   Any of certain genera of family Muridae of rodents: A Ryukyu spiny rats (Tokudaia).
5. 5
   Any of certain genera of family Muridae of rodents: A Sulawesi spiny rats (Echiothrix).