/ Dictionary / Index C common nail: Meaning and Definition of Find definitions for: com'mon nail' Pronunciation: [key] a cut or wire nail having a slender shaft and a broad, flat head. See illus. under Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. common multiple common noun Related Content Daily Word Quiz: laudable Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language