water vole

from the GNU version of the Collaborative International Dictionary of English.

• (Zoöl.) See under vole.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun Either of two Old World vole species: the European water vole, Arvicola amphibius (also Arvicola terrestris) or the southwestern water vole, Arvicola sapidus.
• noun The North American rodent Microtus richardsoni, which closely resembles the vole.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun common large Eurasian vole
• noun of western North America