Openwork Gable, From Front of Rouen Cathedral
A gable is the generally triangular portion of a wall between the edges of a sloping roof. A wimperg is a German and Dutch word for a Gothic ornamental gable with tracery over windows or portals, which were often accompanied with pinnacles. It was a typical element in Gothic Architecture especially in cathedral architecture. Wimpergs often had crockets or other decorative elements in the Gothic style. The intention behind the wimperg was the perception of increased height.
A. D. F. Hamlin College Histories of Art History of Architecture (New York, NY: Longmans, Green, and Co., 1915)
Courtesy the private collection of Roy Winkelman