- 1(formal) the crime of killing your brother or sister; a person who is guilty of this crime compare matricide, parricide, patricide
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- 2the crime of killing people of your own country or group; a person who is guilty of this crime
NAmE//ˌfrætrəˈsaɪdl//
adjective to be engaged in a fratricidal struggleSee fratricide in the Oxford Advanced Learner's DictionaryCheck pronunciation: fratricide