1 a sign that shows you what sth is like or how a situation is changing:
The economic indicators for the end of the year are better than expected. * These atmospheric waves are a reliable indicator of weather changes.
2 a device on a machine that shows speed, pressure, etc:
a depth indicator
3 (BrE) (AmE turn signal) (also informal blinker AmE, BrE) a light on a vehicle that flashes to show that the vehicle is going to turn left or right:
Her right-hand indicator was flashing.
