[1] : The Collaborative International Dictionary of English v.0.48

mink \mink\ mi^ngk, n. cf. 2d minx.
   1. zool. a carnivorous mammal of the genus mustela
      foremrly putorius, allied to the weasel. the european
      mink is mustela lutreola. the common american mink
      mustela vison varies from yellowish brown to black.
      its fur is highly valued. called also minx, nurik, and
      vison.
      1913 webster +pjc

   2. the fur of the mink1. together with sable, it is one of
      the most expensive furs not taken from endangerd species.
      when the fur is taken from animals grown on a farm, it
      called ranch mink.
      pjc
see also:
minx mustela putorius mustela lutreola mustela vison minx 
nurik vison ranch mink 

[2] : The Collaborative International Dictionary of English v.0.48

vison \vi"son\, n. f. zool.
   the mink.
   1913 webster

Vison >> V Words
Vison, definition of term: Vison
vison_pag1.html