parricide
noun law specialized uk/ˈpær.ɪ.saɪd/ us/ˈper.ə.saɪd/
[ C or U ]弑亲罪，（尤指）弑父（或母）罪
the crime of murdering a close relation, especially a parent
Compare: matricidepatricide
[ C ]弑父（或母）者，弑亲者
a person who has killed their father or mother, or another close relation