(US) Any of various aquatic or semi-aquatic rodents from Florida and southern Georgia, especially Neofiber alleni; the muskrat. / (Australia) A water mouse, especially, the rakali, Hydromys chrysogaster.

plural of water rat

(zoology) Alternative form of water rat

Hydromys ziegleri, a species of water rat native to the mountains of Papua New Guinea.

plural of Ziegler's Water Rat

plural of Ziegler's water rat

A rate or tax for the supply of water.