1
                    
                                          
              
          
                                                      : a Roman clan embracing the families of the same stock in the male line with the members having a common name and worshipping a common ancestor                                      
                
                    
2
                    
                                          
              
          
                                                      : clan                                      
                
                                
            especially                
          
                                                      : a patrilineal clan                                      
            
            3
                    
                                          
              
          
                                                      : a distinguishable group of related organisms                                      
                
                    
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  Merriam-Webster unabridged




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