flouns.

To throw the limbs and body one way and the other; to spring, turn or twist with sudden effort or violence; to struggle as a horse in mire. You neither fume, not fret, not flounce.

To move with jerks or agitation.

To deck with a flounce; as, to flounce a petticoat or frock.

A narrow piece of cloth sewed to a petticoat, frock or gown, with the lower border loose and spreading. The present is the age of flounces. 1827.