guinea pig

guinea pig

noun

Definition of GUINEA PIG

1

: a small stout-bodied short-eared tailless domesticated rodent (Cavia porcellus) of South American origin often kept as a pet and widely used in biological research —called also cavy

2

: a subject of research, experimentation, or testing

Examples of GUINEA PIG

1. He volunteered to act as a guinea pig in the experiment.

First Known Use of GUINEA PIG

1664

Rhymes with GUINEA PIG

caprifig, hit it big, infra dig, jury-rig, periwig, strangler fig, thimblerig, weeping fig, whirligig, WYSIWYG, Zagazig