子こ殺ごろしこごろしMeanings1nouninfanticide; filicideRefers to the act of killing one's own child. A serious, legal/psychological term.その事じ件けんは子こ殺ごろしとして扱あつかわれた。The case was treated as filicide.子こ殺ごろしは最もっとも重おもい罪つみの一ひとつだ。Filicide is one of the most serious crimes.