Keywords: flash
Sign Definition
As a Noun
                                            1.  A sudden brief appearance of light. English = flash.
                                          
                                          
                                        
                                            2.  A sudden brief sound, usually loud; a burst of sound; a blast of noise.
                                          
                                          
                                        As a Verb or Adjective
                                            1.  Of a source of light, to appear suddenly and then disappear. English = flash.
                                          
                                          
                                        
                                            2.  Of a source of sound, to give out a noise for a short period of time.