n. pl. otter or ot·ters
1. Any of various aquatic or semiaquatic carnivorous mammals of the mustelid subfamily Lutrinae, having webbed feet and dense, dark brown fur.
2. The fur of one of these animals.
[Middle English oter, from Old English otor; see wed-1 in the Appendix of Indo-European roots.]
(click for a larger image)otter
Asian small-clawed otterAonyx cinerea
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