grison

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. Either of two small carnivorous mammals (Galictis vittata or G. cuja) of Central and South America, having grizzled fur, a slender body, and short legs.

Century Dictionary and Cyclopedia

1. n. An animal of the genus Galictis, G. vittata or Guiana marten, a plantigrade carnivorous quadruped of the subfamily Mustelinœ, inhabiting South America. It is made by J. E. Gray the type of genus Grisonia. See cut under Galictis.
2. n. A kind of sapajou, the Lagothrix canus of Geoffroy.

Wiktionary

1. n. A small, South American carnivorous mammal, of the genus Galictis, somewhat resembling a weasel

GNU Webster's 1913

1. n. A South American animal of the family Mustelidae (Galictis vittata). It is about two feet long, exclusive of the tail. Its under parts are black. Also called South American glutton.
2. n. A South American monkey (Lagothrix infumatus), said to be gluttonous.

WordNet 3.0

1. n. carnivore of Central America and South America resembling a weasel with a greyish-white back and dark underparts