a South American tailless rodent, Hydrochaeris hydrochaeris, living along the banks of rivers and lakes, having partly webbed feet: the largest living rodent.
Origin of capybara
1765–75; < New Latin < Portuguese capibara < Tupi
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
the largest rodent: a pig-sized amphibious hystricomorph, Hydrochoerus hydrochaeris, resembling a guinea pig and inhabiting river banks in Central and South America: family Hydrochoeridae
Word Origin for capybara
C18: from Portuguese capibara, from Tupi
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
South American rodent, 1774, from some Tupi (Brazilian) native name.
Online Etymology Dictionary, © 2010 Douglas Harper