| Matricide 1. (n.) The murder of a mother by her son or daughter. 2. (n.) One who murders one's own mother. Thesaurus Entries aborticide, fratricide, fungicide, genocide, germicide, herbicide, homicide, infanticide, insecticide, microbicide, parricide, patricide, pesticide, regicide, rodenticide, sororicide, suicide, uxoricide, vermicide |