Keywords: fly (trousers)
Sign Definition
As a Verb or Adjective
                                            1.  To zip up or do up the front opening on a pair of trousers; to zip up or do up a fly.
                                          
                                          
                                        
                                            2.  Of a fly on a pair of trousers, to be zipped up, to be done up.
                                          
                                          
                                         
                  
                      