Plume

noun

1. A feather of a bird, especially a large or showy one used as a decoration.
2. A cluster of feathers worn as an ornament, especially on a helmet; a hackle.
3. A token of honour or prowess; that on which one prides oneself; a prize or reward.
4. The vane of a feather, especially when on a quill pen or the fletching of an arrow.
5. Short for plume moth.