feather

n.

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

   羽毛很輕，因此我們說"輕如鴻毛"。

2. （作為狩獵對象的）鳥類[U]
3. （箭，帽的）羽飾[C]
4. 種類；品質[C]
   Birds of a feather flock together.

   鳥以群分，物以類聚。