N
1: a person who murders their brother or sister
2: the act of murdering your own brother or sister
3: fire that injures or kills an ally, or fellow countryman, commonly referred to as friendly fire
Today's death toll si 2,100. Sadly 600 of these were from incidents of fratricide.

Many of our brothers in arms have been killed by fratricide, don't let you, or your battle buddy be the next one to be shot up by a jack legor a blue falcon.
by PFC Karma August 11, 2006
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Fratricide is when you kill your own brother.

Fratricide is when you kill a brother in arms (soldier or political/religous brother) who you are fighting with either on purpose or by accident.
Cain committed fratricide when he killed his own brother Abel in the Book of Genesis.

In 9/11 the terrorists not only committed mass murder but they had also committed acts of fratricide against their own Islamic brothers.
by The Moody Poet January 21, 2007
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That one Steam award you get when you kill the companion cube in Portal. You know, the one that made MatPat from Game Theory make a video about how the cubes have dead bodies in them.
(also, the actual definition is killing your brother/sister)
Jeff: You get to the part in Portal where you have to incinerate the companion cube?
Brian: Yeah. It's a shame. That cube was like a brother to me.
Jeff: Whatever fratricide is, I don't want any part in it.
by mikeybrine January 16, 2020
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It means when one is killing their own family or society members of the same group.
Brothers killing each other for the throne led to fratricidal war.
by AZRAEL34 March 8, 2022
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