turn indicator

American  

noun

Aeronautics.

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

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Etymology

Origin of turn indicator

First recorded in 1915–20

Example Sentences

He sticks to his lane and uses his turn indicator, exiting the parkway in the Bowie area of Prince George’s County, where he slows and is halted by the Park Police again.

From Washington Post

He put on his turn indicator and pulled back out into the lane.

From Literature

The ship felt as if it were flying straight, but when I peeked over Bunny’s shoulder I saw the needle on his bank and turn indicator leaning halfway over to the right.

From Project Gutenberg

But in a heavy fog, or if he can’t see over his cockpit, the horizon doesn’t exist, and a bank and turn indicator is his instrument.

From Project Gutenberg

Bell kept his eyes on the bank and turn indicator, glancing now and then at the altimeter.

From Project Gutenberg