Search Result for "phenacomys": 
Wordnet 3.0

NOUN (1)

1. any of several vole-like terrestrial or arboreal rodents of cold forested regions of Canada and western United States; 



WordNet (r) 3.0 (2006):

phenacomys
    n 1: any of several vole-like terrestrial or arboreal rodents of
         cold forested regions of Canada and western United States