noun / verb
festoon
feh-STOON/feˈstuːn/
A decoration hung in curves, or to decorate with it.
A festoon of flowers hangs in curves above the doorway.

Etymology
Festone meant a festive ornament and apparently derives from festa, “celebration, feast.” The name for a hanging decorative chain became a verb meaning to adorn something with such chains or garlands.
More examples
- Red fabric festoons hang between the columns.
- We festoon the porch with strings of lights.
- She festooned the railing with ribbons for the celebration.
Forms
festoon · festoons · festooned · festooning