killing of one's own child
• (n.) The act of murdering a son or a daughter; also, parent who commits such a murder.
Fil'i·cide noun [ Latin filius son, filia daughter + caedere to kill.] The act of murdering a son or a daughter; also, parent who commits such a murder. 
filicide, filicidal 1. One who kills a son or daughter; a slayer of his/her own child. 2. The action of killing a son or daughter.
noun the murder of your own son or daughter
a person who kills his or her son or daughter. · the act of killing one's son or daughter: Ancient myth contains numerous examples of filicide.