Webster's Revised Unabridged Dictionary · 1913

Festoon

Festoon , noun

[French feston (compare Sp. feston, Italian festone), prob. from Latin festum festival. See Feast.]

1.
A garland or wreath hanging in a depending curve, used in decoration for festivals, etc.; anything arranged in this way.
2.
(Architecture & Sculpture) A carved ornament consisting of flowers, and leaves, intermixed or twisted together, wound with a ribbon, and hanging or depending in a natural curve. See Illust. of Bucranium.

Festoon , transitive verb

To form in festoons, or to adorn with festoons.