1. (鸟)巢;(鸟)窝
    A bird's nest is the home that it makes to lay its eggs in.

    e.g. I can see an eagle's nest on the rocks.
           我能看到岩石上的鹰巢。

2. (鸟类)筑巢，做窝
    When a bird nests somewhere, it builds a nest and settles there to lay its eggs.

    e.g. Some species may nest in close proximity to each other.
           一些鸟类会彼此紧挨着筑巢。
    e.g. ...nesting sites.
           巢址

3. (昆虫或动物的)巢，穴
    A nest is a home that a group of insects or other creatures make in order to live in and give birth to their young in.

    e.g. Some solitary bees make their nests in burrows in the soil.
           一些独居蜂会把巢筑在田间的地洞里。
    e.g. ...a rat's nest.
           鼠穴

4. 安乐窝;安适的地方
    You can refer to a place as your nest when it is your home or where you feel comfortable and relaxed.

    e.g. My wife seems to be building a nest of her own at Osborne House...
           我夫人像是要把奥斯本庄园变成自己的安乐窝。
    e.g. The baby had been asleep in her nest of pink and white blankets.
           婴儿睡在粉色和白色毛毯铺成的小窝里。

5. 老巢;窟;秘密窝点;(贼窟中的)一帮
    You can use nest to refer to a place where something bad is being done or to the people there who are doing it.

    e.g. ...Biarritz, notorious in those days as a nest of spies...
           比亚里茨，那时候出了名的间谍老巢
    e.g. Are you telling me that you've got your own little nest of informers in the Police Department?
           你是说你在警察局有一帮通风报信的？

6. see also: crow's nest;love nest

7. 营私;自肥
    If you say that someone is feathering their nest, you mean that they are getting a lot of money out of something, so that they can lead a comfortable life.

    e.g. Mary's much more interested in doing things for other people than feathering her own nest.
           相比追逐私利，玛丽更乐意帮助他人。

8. 自立门户;独立生活
    When children fly the nest, they leave their parents' home to live on their own.

    e.g. When their children had flown the nest, he and his wife moved to a thatched cottage in Dorset.
           孩子们独立生活后，他和妻子搬到多塞特的茅草屋去住了。

9. a hornet's nest -> see hornet