ma·chine-gun
                    
                                                                                                              
                                                                                                                                  mə-ˈshēn-ˌgən 
                                                      
                                                          
            
                                
              
          
                                                      : characterized by rapidity and sharpness : rapid-fire                                      
              
                             
a comic's machine-gun delivery
                         
                
                    
            
              machine-gunned; machine-gunning; machine-guns            
        
    
                                
              
          
                                                      : to shoot at, wound, or kill (someone or something) with a machine gun                                      
              
                             
… machine-gunned a marauding gang of terrorists outside the U.S. embassy …—
Terry Eagleton
                                       A few years later someone machine-gunned to death the prosecutor who wanted to try the group for killing the soldiers.—
Paul Berman
                         
                
                    
                                                      machine gunner
                                      noun
                                                                          
                        
                        
      
 or less commonly machine-gunner
                                                                                         plural machine gunners also machine-gunners
                                                            
          
         
                        These battalions were composed of the hardened infantrymen—riflemen, machine gunners, grenadiers, and mortarmen—who carried the main burden of the war.    
        
        
            —
Shelby L. Stanton          
  
              
            
               plural machine guns            
        
    
                                
              
          
                                                      : a gun for sustained rapid fire that uses bullets                                      
                
                                
            broadly                
          
                                                      : an automatic weapon                                      
            
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  Merriam-Webster unabridged




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