/ Dictionary / Index F fratricide: Meaning and Definition of Find definitions for: frat•ri•cide Pronunciation: (fra'tri-sīd", frā'-), [key] — n. a person who kills his or her brother. the act of killing one's brother. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: fratricide (Thesaurus) fraternize fratry Related Content Daily Word Quiz: penury Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language