| Fratricide 1. (n.) The act of one who murders or kills his own brother. 2. (n.) One who murders or kills his own brother. Thesaurus Entries aborticide, fungicide, genocide, germicide, herbicide, homicide, infanticide, insecticide, matricide, microbicide, parricide, patricide, pesticide, regicide, rodenticide, sororicide, suicide, uxoricide, vermicide |