noun. 
                    The act of going or issuing out; a going or passing out; departure, especially from an inclosed or confined place.
                  
                
                  
                    noun. 
                    Provision for passing out; a means or place of exit.
                  
                
                  
                    noun. 
                    In astronomy, the passing of a star, planet, or satellite (except the moon) out from behind or before the disk of the sun, the moon, or a planet.
                  
                
                  
                    
                    To go out; depart; leave.