field rat

Short definition from Wiktionary

Noun

1. 1
   A rat of any of several species: Rattus sordidus (syn. Rattus conatus), a burrowing species that forms underground colonies, found in Australia.
2. 2
   A rat of any of several species: Rattus tunneyi, found in a variety of habitats, found in north and eastern Australia.
3. 3
   A rat of any of several species: Rattus nitidus: Himalayan field rat.
4. 4
   A rat of any of several species: Ratus exulans, found in the Pacific islands.
5. 5
   A rat of any of several species: Rattus rattus argentiventer, found in the tropics.
6. 6
   A rat of any of several species: Maxomys surifer (syn. Rattus surifer solaris).
7. 7
   A rat of any of several species: Rattus tiomanicus: Malayan field rat.
8. 8
   A rat of any of several species: Ricefield rat.