Definitions from Wiktionary (guinea pig)

▸ noun:  Any tailless rodent of the genus Cavia, which have short ears and superficially resemble large hamsters.
▸ noun:  (especially) A domestic guinea pig, Cavia porcellus, often kept as a pet.
▸ noun:  (figuratively) A living experimental subject.
▸ noun:  (dated, slang) A professional company director, without time or real qualifications for the duties.
▸ noun:  (nautical, obsolete) A midshipman in the East India service; (by extension) a low-skilled or non-proficient seaman.
▸ Also see guinea_pig


▸ Words similar to guinea pigs
▸ Usage examples for guinea pigs

▸ Idioms related to guinea pigs
▸ Wikipedia articles (New!)
▸ Words that often appear near guinea pigs
▸ Rhymes of guinea pigs

▸ Invented words related to guinea pigs