New World porcupine noun1 •Any of the large, arboreal, spiny-furred rodents of the family Erethizontidae, native to forests and wooded regions of North America and northern South America.New World porcupines, found in both North and South America, are arboreal and climb trees with agility, aided in some species by a prehensile tail. — 2004 formsNew World porcupines
