/ Dictionary / Index N napiform: Meaning and Definition of Find definitions for: na•pi•form Pronunciation: (nā'pu-fôrm"), [key] — adj. round at the top and tapering sharply below; turnip-shaped, as a root. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Napier's bones napkin 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