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Word: guinea pig (lookup usage) (lookup stats)


Meaning:

Noun:

  • A tailless rodent of the ''Cavia'' genus, with short ears and larger than a hamster; the species ''Cavia porcellus'' is often kept as a pet.
  • idiom A person who volunteers for an experiment or to try anything new; an experimental subject (''from the use of the rodent in laboratory experiments'').

Source: Wiktionary | Src Info »