Definition of fratricide noun from the Oxford Advanced American Dictionary

     

    fratricide

     noun
    noun
    NAmE//ˈfrætrəˌsaɪd//
     
    [uncountable, countable]
     
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  1. 1(formal) the crime of killing your brother or sister; a person who is guilty of this crime compare matricide, parricide, patricide
  2. 2the crime of killing people of your own country or group; a person who is guilty of this crime
fratricidal
 
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NAmE//ˌfrætrəˈsaɪdl//
 
adjective to be engaged in a fratricidal struggle
See the Oxford Advanced Learner's Dictionary entry: fratricide