n., pl., otter, or -ters.
- Any of various aquatic, carnivorous mammals of the genus Lutra and allied genera, related to the minks and weasels and having webbed feet and dense, dark brown fur.
- The fur of this mammal.
[Middle English oter, from Old English otor.]
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.