skysurfing
noun
                                                                                                                            
                                                            sky·surf·ing
                    
                                                                                                              
                                                                                                                                  ˈskī-ˌsər-fiŋ 
                                                      
                                                          
            
                                
              
          
                                                      : skydiving in which the participant performs maneuvers during free fall while riding on a modified surfboard                                      
                
                    
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  Merriam-Webster unabridged




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