reverse curve

American  

noun

1. an S -shaped curve, as on highways and railroad tracks, produced by the joining of two curves that turn in opposite directions.

---

Example Sentences

Basically a reverse curve, it is thrown regularly by only two pitchers in the National League besides Marichal�Cincinnati's Jack Baldschun and Atlanta's Chi-Chi Olivo.

From Time Magazine Archive

A woman I know was putting one of her babies to bed in lower 2, when we wiggled through a reverse curve that was like shooting White Horse Rapids in a Peterboro.

From The Last Spike And Other Railroad Stories by Warman, Cy

At 100 feet a reverse curve brought the cavern on a course parallel to that which it had held up to 60 feet.

From Archeological Investigations Bureau of American Ethnology, Bulletin 76 by Fowke, Gerard

And rip, whrrr! as they slammed around a double reverse curve with a vicious swing that made the bolts rattle in the last car.

From Careers of Danger and Daring by Moffett, Cleveland

Air Force chevrons have no point, but are a compound reverse curve with the deepest part of the curve worn down; over this is imposed a star within a circle.

From The Armed Forces Officer Department of the Army Pamphlet 600-2 by United States. Dept. of Defense