Learn how to say Fratricide correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word fratricide:
the killing of one’s brother or sister:
Cain justifies his fratricide with lethal logic
[count noun] a person who kills their brother or sister.
the accidental killing of one’s own forces in war:
the Vietnam War saw fratricide increase because of the close-in jungle fighting
late 15th century (denoting a person who kills their brother or sister, derived from Latin fratricida): the primary current sense comes via French from late Latin fratricidium, from frater ‘brother’ + -cidium (see -cide)