wicker-bill
 n.— «Dan hand-cut and shaped a couple of pieces of sheet metal that looked like angle-irons—just 90 degree bent pieces of aluminum. He had us mount them on the back edges of the rear wing of the car.…His simple “wicker-bill” invention—also known as the Gurney Flap—had given us another four miles per hour.» —by Bobby Unser Winners Are Driven Feb. 14, 2003. (source: Double-Tongued Dictionary)

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