n.

1. 羽毛[C]
   Feathers are very light, so that we say "as light as a feather".

   羽毛很轻，因此我们说“轻如鸿毛”。

2. （作为狩猎对象的）鸟类[U]
3. （箭，帽的）羽饰[C]
4. 种类；品质[C]
   Birds of a feather flock together.

   物以类聚，人以群分。

vt.

1. 用羽毛装饰
2. 使（船桨）与水面平行

vi.

1. 长羽毛
   The young birds feathered.

   幼鸟长出了羽毛。

2. 使桨与水面平行

n.

1. any of the flat appendages growing from a bird's skin, consisting of a partly hollow horny shaft fringed with vanes of barbs.
2. (feathers) a fringe of long hair on the legs of a dog, horse, or other animal.

v.

1. rotate the blades of (a propeller) about their own axes in such a way as to lessen the air or water resistance.
   ▸Rowing  turn (an oar) so that it passes through the air edgeways.
2. [as adj. feathered] covered or decorated with feathers.
3. float or move like a feather.