down feather

They wore in their heads feathers of owls, ravens, and birds of prey, each of which had at the tip a large white down feather.

From one point a thin white thread of vapour rose slantingly to an immense height, and then frayed out like a down feather.

Finally the tips of the barbs break through the investing sheath and the fully formed down-feather emerges.

The remainder of the rods form the barbs and barbules as in the down-feather.

Before he set out, he plucked from his breast a small down-feather and fastened it to a stick no bigger than a wisp of hay.