1.  flow (of a fluid or gas);  stream;  current
2.  flow (of people, things);  passage (of time);  tide;  passing;  (changing) trends;  tendency
3.  course (of events);  (step-by-step) procedure;  process
4.  group of people who remain together after the end of an event
5.  descent;  ancestry;  school
6.  forfeiture;  foreclosure
7.  cancellation
usu. as お流れ
8.  drifting;  wandering;  roaming