An African rodent that frequents dense vegetation on swampy ground.
- Three genera in the family Muridae, in particular the vole-like Otomys (also called vlei rat) and the slender Malacomys: several species
More example sentences
- A rat is a rat, unless it's a swamp rat, in which case it's called a nutria.
- Let us now address the swamp rat, which goes by the name of Nutria.