guinea

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guinea pig

Someone or something used as the subject of an experiment. Jane used her husband as a guinea pig to try her new baked chicken recipe. Craig earned a little extra money by signing up to be a guinea pig in some local clinical studies.
See also: guinea, pig

Serve as a guinea pig

Fig. [for someone] to be experimented on; to allow some sort of test to be performed on one. (Alludes to the use of guinea pigs for biological experiments.) Try it on someone else! I don't want to serve as a guinea pig! Jane agreed to serve as a guinea pig. She'll be the one to try out the new flavor of ice cream.
See also: guinea, pig, serve

a guinea pig

COMMON If someone is used as a guinea pig, new ideas, methods, or medical treatments are tested on them. The new technology should allow us to study genetic disease without having to use humans as guinea pigs. This is the first time I've cooked this dish so you are my guinea pigs.
See also: guinea, pig

a ˈguinea pig

a person used in medical or other experiments: Students in fifty schools are to act as guinea pigs for these new teaching methods.
A guinea pig is a small animal with short ears and no tail, often kept as a pet or used for laboratory research.
See also: guinea, pig
References in classic literature ?
So, year after year, Silas Marner had lived in this solitude, his guineas rising in the iron pot, and his life narrowing and hardening itself more and more into a mere pulsation of desire and satisfaction that had no relation to any other being.
Fogg took out the twenty guineas he had just won at whist, and handed them to the beggar, saying, "Here, my good woman.
Next, it appeared to him that Sunday afternoon, when everybody was gone to church except Jacob and the cowboy, was so singularly favourable an opportunity for sons who wanted to appropriate their mothers' guineas, that he half thought it must have been kindly intended by Providence for such purposes.
Smallweed, hearing that this authority is an old soldier, so strongly inculcates the expediency of the trooper's taking counsel with him, and particularly informing him of its being a question of five guineas or more, that Mr.
The lot was finally knocked down at a guinea to Mr.
To make some sort of disappearance had been his precise intention, but to disappear in this fashion and make his return to the world with a thousand guineas in his pocket, had not exactly come within the scope of his imagination.
The great physician has just gone away with two guineas in his pocket.
He immediately gave the mother a couple of guineas, with which he bid her cloath her children.
The captain was looking at the guineas, and then at the belt, and then at the gentleman's face; and I thought he seemed excited.
Rebecca had never seen a Baronet, as far as she knew, and as soon as she had taken leave of Amelia, and counted the guineas which good- natured Mr.
He has spent half his nights up here, at guineas apiece.
Thirdly, That the terms offered to the person who should undertake and properly perform these duties were four guineas a week; that he was to reside at Limmeridge House; and that he was to be treated there on the footing of a gentleman.
After this he thought he had heard somebody come upstairs, so got off from the bed, lifted me up, professing a great deal of love for me, but told me it was all an honest affection, and that he meant no ill to me; and with that he put five guineas into my hand, and went away downstairs.
Six guineas,' said the blind man, shaking his head, 'though of the fullest weight that were ever coined, fall very far short of twenty pounds, widow.
It was too late to do it now, however; so he shook his head gravely, and, pocketing the five guineas, withdrew.