/ Dictionary / Index M mother-of-pearl: Meaning and Definition of Find definitions for: moth•er-of-pearl Pronunciation: (mu'ur-uv-pûrl'), [key] — n. a hard, iridescent substance that forms the inner layer of certain mollusk shells, used for making buttons, beads, etc.; nacre. —adj. of or having the qualities of mother-of-pearl, as being iridescent or pearly: mother-of-pearl buttons. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: mother-of-pearl (Thesaurus) Mother of God mother-of-pearl cloud Related Content Daily Word Quiz: eureka Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language