'Water vole' definitions:

Definition of 'water vole'

From: WordNet
noun
Common large Eurasian vole [syn: water vole, water rat, Arvicola amphibius]
noun
Of western North America [syn: water vole, Richardson vole, Microtus richardsoni]

Definition of 'Water vole'

From: GCIDE
  • Water vole \Wa"ter vole`\ (Zool.) See under Vole. [1913 Webster]