D defs.my
Entry 1 sense Webster, 1913

Water mouse

/wôt'-ẽr mous/ · Wa·ter mouse · IPA
01 Any one of several species of mice belonging to the genus Hydromys, native of Australia and Tasmania. Their hind legs are strong and their …
  1. 1.
    Any one of several species of mice belonging to the genus Hydromys, native of Australia and Tasmania. Their hind legs are strong and their toes partially webbed. They live on the borders of streams, and swim well. They are remarkable as being the only rodents found in Australia.(Zool.)