Noun Definition

guinea pig

1.Definition: a person who is subjected to experimental or other observational procedures; someone who is an object of investigation

"The subjects for this investigation were selected randomly", "The cases that we studied were drawn from two different communities"

Related Noun(s):subject, case

Category: People

2.Definition: stout-bodied nearly tailless domesticated cavy; often kept as a pet and widely used in research

Category: Animals