Meaning: かわうそn. (Kata=カワウソ, Kanji=川獺) otter, aquatic webbed-foot mammal that has thick smooth fur and eats fish and is related to weasels and minks (found world-wide)n. (Kanji=獺) (Zoology) otter, aquatic webbed-foot mammal that has thick smooth fur and eats fish and is related to weasels and minks (found world-wide)