The Collaborative International Dictionary of English v.0.48:

Mustela \Mustela\ prop. n.
   The type genus of the family Mustelidae: minks and weasels.

   Syn: genus Mustela.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

Mustela
    n 1: type genus of the family Mustelidae: minks and weasels
         [syn: Mustela, genus Mustela]