—indicator /ˈɪn.dɪ.keɪ.tər/ aep /ˈɪn.dɪ.keɪ.tɚ/
noun [C] (SHOWING)
► C2 something that shows what a situation is like: » Commodity prices can be a useful indicator of inflation, he claimed.» an economic indicatorThesaurus+: ↑Signs, signals and symbols , ↑Specific signs and symbolsnoun [C] (SIGNAL)
F0 UK (US turn signal) one of the lights at the front and back of a road vehicle that flash to show which way the vehicle is turning
See picture: (UK) indicator/(US) turn signal 
See picture: (UK) indicator/(US) turn signal
Thesaurus+: ↑The exterior of vehicles
F0 a device that shows a value or a change in level, speed, etc.:
» The car has an overhead console with a compass and outside temperature indicator.Thesaurus+: ↑Weighing, measuring and counting devices