power plant
noun
1
                    
                                          
              
          
                                                      : an electric utility generating station                                      
                
                    
2
                    
                                          
              
          
                                                      : an engine and related parts supplying the motive power of a self-propelled object (such as a rocket or automobile)                                      
                
                    
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  Merriam-Webster unabridged




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