We found one dictionary that defines the word serve as a guinea pig:

Miscellaneous (1 matching dictionary)

1. Serve as a guinea pig: Idioms

▸ Words similar to serve as a guinea pig ▸ Usage examples for serve as a guinea pig ▸ Idioms related to serve as a guinea pig ▸ Wikipedia articles (New!) ▸ Words that often appear near serve as a guinea pig ▸ Rhymes of serve as a guinea pig ▸ Invented words related to serve as a guinea pig