Frat"ri*cide (?), n. [L. fratricidium a brother's murder, fr. fratricida a brother's murderer; frater, fratris, brother + caedere to kill: cf. F. fratricide.]
1.
The act of one who murders or kills his own brother.
2. [L. fratricida: cf. F. fratricide.]
One who murders or kills his own brother.
© Webster 1913.