From Longman Dictionary of Contemporary Englishparricidepar‧ri‧cide /ˈpærɪsaɪd/ noun [uncountable] formalSCCKILL the crime of killing your father, mother, or any other close relative → matricide, patricide
Examples from the Corpus
parricide• How do we know that there was an original crime of parricide?• In Wagner's opera Parsifal the trauma of parricide is there in the background, but is unconscious.• Godoy struck first hoping, in the Escorial Trial, that Ferdinand might be found guilty of political parricide.• In his Totem and Taboo Freud made such an act of primal parricide and rape the origin of all subsequent human culture.• The memory of the parricide was both important enough, and repeated often enough, to enter the archaic heritage.Origin parricide (1500-1600) Latin parricidium, from parri- “relative” + -cidium (-CIDE) 