/ Thesaurus / O Synonyms of old world porcupine Find synonyms for: Noun1. Old World porcupine, porcupine, hedgehogusage: terrestrial porcupineWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language