Fratricide

['frætrɪsaɪd]

(noun.) the murder of your sibling.

(noun.) a person who murders their brother or sister.

Checked by Francis--From WordNet

(n.) The act of one who murders or kills his own brother.

(n.) One who murders or kills his own brother.

Editor: Nita

n. one who kills his brother: the murder of a brother.—adj. Frat′ricidal.

Inputed by Logan