fratricide Meaning, Definition & Usage

  1. noun a person who murders their brother or sister
  2. noun fire that injures or kills an ally
    friendly fire.
  3. noun the murder of your sibling

WordNet

Frat"ri*cide noun
Etymology
L. fratricidium a brother's murder, fr. fratricida a brother's murderer; frater, fratris, brother + caedere to kill: cf. F. fratricide.
Definitions
  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