/ Dictionary / Index M murderess: Meaning and Definition of Find definitions for: mur•der•ess Pronunciation: (mûr'dur-is), [key] — n. a woman who commits murder. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: murderess (Thesaurus) murderer Murder in the Cathedral* Related Content Daily Word Quiz: placid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language