Guin·ea pig
1. Zool. A small Brazilian rodent (Cavia porcellus or Cavia cobaya), about seven inches in length and usually of a white color, with spots of orange and black. Called also cavy. It is the domesticated form of the wild cavy, often kept as a pet and used commonly as an experimental animal in laboratory research.
3. A contemptuous sobriquet. [Obs.] --Smollett
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Cavia porcellus
n : South American cavy; possibly ancestral to the domestic
guinea pig [syn: aperea, wild cavy]