guinea pig
noun
1- a domesticated tailless South American cavy, originally raised for food. It no longer occurs in the wild and is now typically kept as a pet or for laboratory research.豚鼠, 天竺鼠。
1.1
- Cavia porcellus, family Caviidae.拉丁名Cavia porcellus, 豚鼠科。
1.2
- a person or thing used as a subject for experiment供实验的人（或物）, 实验品。