FILICIDE
filicide
(noun) the murder of your own son or daughter
filicide
(noun) a parent who murders his own son or daughter
Source: WordNet® 3.1
Etymology
Noun
filicide (countable and uncountable, plural filicides)
A person who kills their own child.
The killing of one's own child.
Usage notes
Infanticide is the usual English term, especially if the victim is at or near infancy. Filicide implies specifically the killing of one's own son or daughter, especially biological and if the victim lived past infancy.
Source: Wiktionary
Fil"i*cide, n. Etym: [L. filius son, filia daughter + caedere to
kill.]
Definition: The act of murdering a son or a daughter; also, parent who
commits such a murder.
Source: Webster’s Unabridged Dictionary 1913 Edition