Watteau back
noun
a loose, full back of a woman's gown, formed by wide box pleats hanging from a high shoulder yoke and extending to the hem in an unbroken line.
Origin of Watteau back
First recorded in 1895–1900; after a type of gown depicted in paintings by
Watteau
British Dictionary definitions for watteau back
Watteau back
noun
a section at the back of a woman's dress that is caught in pleats or gathers at the neck and falls unbelted to the floor