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

When the driver flicks his turn indicator at night, the cornering light floods the area into which he is turning with a wide, low arc of light.

From Time Magazine Archive

A pioneer of air instruments and of blind flying, Lawrence Sperry invented such indispensable aids to flight as the gyropilot, bank & turn indicator, early efficient parachute.

From Time Magazine Archive

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

From "Counting by 7s" by Holly Goldberg Sloan

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 Test Pilot by Collins, Jimmy

And if we were supposed to fly in anything but clear weather, we'd need a bank and turn indicator and an artificial horizon.

From Smugglers' Reef by Blaine, John