from The Century Dictionary.
- noun Same as
ground-hog, 2.—2. Same as ground-rat.
Sorry, no etymologies found.
_Octodontidae_ the best known is the coypu of the Andes, one of the largest of the rodents, and the ground-rat or ground-pig of western and southern Africa.
Natural History of the Mammalia of India and Ceylon Robert Armitage Sterndale 1870