Definition of "turn signal" []

• See directional signal. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "The only difference is, for the over-forty NASCAR races, drivers are required to stay in the slow lane with their left turn signal on."
• "He flipped on his turn signal and drove through the rain-washed streets of Baton Rouge."