pl. -·rats· or -·rat·
- any of various American rodents (family Cricetidae) living in water and having glossy brown fur, a long tail, webbed hind feet, and a musklike odor
- its fur
nounpl. muskrat or musk·rats
- A large semiaquatic rodent (Ondatra zibethicus) native to North America and naturalized in Eurasia, having a dense brown coat and musk glands under a broad flat tail. Also called musquash, water rat.
- The fur of this rodent.