/ Dictionary / Index P porcupine: Meaning and Definition of Find definitions for: por•cu•pine Pronunciation: (pôr'kyu-pīn"), [key] — n. any of several rodents covered with stiff, sharp, erectile spines or quills, as Erethizon dorsatum of North America. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: porcupine (Thesaurus) porcine porcupine anteater Related Content Daily Word Quiz: modify Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language