burn up
phrasal verb
            
              burned up or burnt up; burning up; burns up            
        
    
                                
              
          
                                                      : to be destroyed or cause (something) to be destroyed by fire                                      
              
                             
Most asteroids burn up upon entering the Earth's atmosphere.
                                       Wildfires have been raging across the region burning up acres of forest.
                                       Do we still need these old receipts? No, burn them up.
                         
                
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  Merriam-Webster unabridged




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