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English Dictionary      examples: 'day', 'get rid of', 'New York Bay'

Guinea pig   Listen
Guinea pig  n.  
(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.
Hence, (figuratively): Any animal or person used in an experiment; also applied to people who are unwillingly or unknowingly subjected by authorities to policies or procedures which might cause bodily or mental harm.
A contemptuous sobriquet. (Obs.)

Collaborative International Dictionary of English 0.48

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"Guinea pig" Quotes from Famous Books

... the Babe, glancing again, a little nervously, at the bushes. "It was like—like a tre-mendous big fat guinea pig, with a fat tail and all kind ...
— Children of the Wild • Charles G. D. Roberts

Words linked to "Guinea pig" :   case, somebody, individual, Cavia cobaya, mortal, subject, cavy, person, soul

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