1.  coming out;  going out;  outflow;  efflux;  rising (of the Sun or the Moon)
2.  attending (work);  appearing (on stage);  one's turn to go on
3.  start;  beginning
4.  origins;  background;  person (or item) originating from ...;  graduate of ...;  native of ...;  member of ... (lineage)
5.  architectural member that projects outward
6.  highest point of the stern of a ship
7.  amount (comprising something);  amount of time or effort required to do something
usu. after the -masu stem of a verb as 〜出がある or 〜出がない, etc.