Wiktionary
                    double-fault
                    
                        
                
                                                                    vb. (context tennis English) To commit a double fault.
Wikipedia
                    Double-fault
                    
                        
                
                                                                    The term “double fault” can refer to:
- double fault (computing), an error that occurs during interrupt handling or exception handling; or
- the occurrence of two consecutive faults during the play of tennis, resulting in the server losing a point.