Căb'i-ai, n.

n. (Zoöl.) An animal of South America (Hydrochærus capybara), living on the margins of lakes and rivers. It is the largest living species of rodent (or quadruped of the beaver tribe), being about three feet long and half that in height. It resembles the Guinea pig somewhat; is of a gentle disposition, shy and timid;—called also capybara. Baird.