guinea pig
The term "guinea pig" refers both to a small rodent often kept as a pet and to a subject used in experiments or tests.
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Definition
A2Zoology
(common)A small, furry rodent native to South America, often kept as a pet.
Example
- She has a guinea pig named Fluffy that she takes care of every day.
B2Science
(figurative)A person or thing used as a subject for experimentation or testing.
Example
- The volunteers were treated like guinea pigs in the new drug trial.
Similar
Terms that have similar or relatively close meanings to "guinea pig":
pig runwater pigsea pigsuckling pigbearded piglab ratpig dog