/ Dictionary / Index E erinaceous: Meaning and Definition of Find definitions for: er•i•na•ceous Pronunciation: (er"u-nā'shus), [key] — adj. Zool. of the hedgehog kind or family. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Erin Erinys Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language