|1.||a decorative chain of flowers, ribbons, etc, suspended in loops; garland|
|2.||a carved or painted representation of this, as in architecture, furniture, or pottery|
|3.||a. the scalloped appearance of the gums where they meet the teeth|
|b. a design carved on the base material of a denture to simulate this|
|4.||a. either of two Zerynthia species of white pierid butterfly of southern Europe, typically mottled red, yellow, and brown|
|b. an ochreous brown moth, Apoda avellana the unusual sluglike larvae of which feed on oak leaves|
|5.||to decorate or join together with festoons|
|6.||to form into festoons|
|[C17: from French feston, from Italian festone ornament for a feast, from festa|
festoon fes·toon (fě-stōōn')
A carving in the base material of a denture that simulates the contours of the natural tissue being replaced by the denture.
in architecture and decoration, carved ornamental motif consisting of stylized flowers, fruit, foliage, and cloth, tied together with ribbons that sag in the middle and are attached at both ends. The distinction is sometimes made between a swag and a festoon by limiting the former to festoons entirely made up of folds of cloth.
Learn more about festoon with a free trial on Britannica.com.