/ Dictionary / Index S spoon nail: Meaning and Definition of Find definitions for: spoon' nail" Pronunciation: [key] — Med. Med. an abnormal condition in which the outer surfaces of the nails are concave; koilonychia. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. spoon hook spoonworm Related Content Daily Word Quiz: alacrity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language