indicator

US /ˈɪn.də.keɪ.t̬ɚ/
UK /ˈɪn.də.keɪ.t̬ɚ/
"indicator" picture
1.

a thing, especially a trend or fact, that shows the state or level of something

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Economic growth is a key indicator of a country's health.
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The survey results are a good indicator of public opinion.
:
signsignalmarkpointergauge
2.

a device providing information about the state or presence of something

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The fuel indicator in my car is broken.
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The temperature indicator showed a rapid drop.
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gaugemeterdialdisplay
3.

a flashing light on a vehicle that tells other drivers which way the vehicle is turning

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Don't forget to use your indicator when turning.
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The car's left indicator is not working.
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turn signalblinker
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indicateindicationindicativeeconomic indicator