Home›Browse›G›guinea pigguinea pigOur editors are putting together more complete content — check back in about 20 minutesguinea pigguinea pig — nounnoun1. a small furry animal often kept as a pet1.nounDefinitiona small furry animal often kept as a petExampleMy sister has a pet guinea pig.2. a person used in an experiment2.nounDefinitiona person used in an experimentExampleHe volunteered to be a guinea pig for the new drug test.