A cabriole leg is one of (usually) four vertical supports of a piece of furniture shaped in two curves; the upper arc is , while lower is ; the upper curve always bows outward, while the lower curve bows inward; with the axes of the two curves in the same plane. This design was used by the ancient Chinese and Greeks, but emerged in Europe in the very early 18th century, when it was incorporated into the more curvilinear styles produced in France, England and Holland.
According to Bird, "nothing symbolises 18th century furniture more than the cabriole leg." The cabriole design is often associated with bun or the "ball and claw" foot design. In England, this design was characteristic of Queen Anne and Chippendale furniture. In France, the cabriole leg is associated with the Louis XV period of furniture design. The cabriole design appeared for the first time in the United States in the 18th century. The basis of its original concept was emulated upon legs of certain four-footed mammals, especially ungulates. The etymology of this term specifically derives from the French word cabrioler, meaning to leap like a goat.
Earliest forms of the cabriole leg were known in ancient China and Greece. In the case of the ancient Chinese, this leg was most closely associated with the lacquered table. While the Chinese culture preserved historical continuity of use, Europeans lost this style prior to the Middle Ages. Finally in France, in the very early 18th century the cabriole leg style re-appeared, imitating a popular graphic scroll design found in French art about the year 1700; in France this design was part of the Rococo style. Quickly England was producing a version of the cabriole leg, which historically is called Queen Anne Style and is associated with the period 1712–1760. (The reign of Queen Anne lasted from 1702 to 1712, but the Queen Anne furniture period is generally considered to continue until 1760, although imitations have, of course, endured to later periods.) The Queen Anne cabriole leg chair typically had a back with hoop design and a vase shaped splat; it also typically had a bun or pad foot. (An alternate design of a Queen Anne chair consisted of a Chinese style, which had flat cresting, vertical back edges and a leg that was also cabriole style.) A subsequent evolution of the cabriole leg in England occurred in about the year 1750 with the advent of Chippendale furniture design; while Chippendale chairs adopted the cabriole leg, the leg design became more delicate than those of the Queen Anne Style.