turn indicator

noun Aeronautics.
a flight instrument that indicates the angular rate of turn of an aircraft about its vertical axis.


Origin:
1915–20

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To turn indicator
Example sentences
The solid green light is often misunderstood as a left turn indicator.
Use your turn indicator to signal changes of direction even when you don't see anyone else around.
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