/ Dictionary / Index E epionychium: Meaning and Definition of Find definitions for: ep•i•o•nych•i•um Pronunciation: (ep"ē-ō-nik'ē-um), [key] — pl. -nych•i•a eponychium. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. épinglé Epipaleolithic Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language