Webster's Revised Unabridged Dictionary · 1913

Panache

Panache , noun

[French, from Latin penna a feather. See Pen a feather.]

1.
A plume or bunch of feathers, esp. such a bunch worn on the helmet; any military plume, or ornamental group of feathers.
A panache of variegated plumes. — Prescott
2.
A pleasingly flamboyant style or manner; flair{4}; verve.