English version

guinea pig

From Longman Dictionary of Contemporary English
Related topics: Animals
guinea pigˈguinea pig noun [countable]  1 HBAa small furry animal with short ears and no tail, which is often kept as a pet2 TEST/EXPERIMENTsomeone who is used in a scientific test to see how successful or safe a new product, system etc is
Examples from the Corpus
guinea pigMy guests are guinea pigs for all the new dishes I try out.
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