fratricide

noun
1
the crime of killing your brother or sister; a person who is guilty of this crime
برادركشی, خواهرکشی, قاتل برادر یا خواهر
compare matricide, parricide, patricide
2
the crime of killing people of your own country or group; a person who is guilty of this crime
برادرکشی, همخون‌کشی, هموطن‌کشی
3
the act of killing by accident your own forces in war
قتل هم‌میهن در جنگ, دوست‌کشی (اشتباه در جنگ)
synonym friendly fire