nest egg 可不是窝里的蛋哦……

　　『 nest egg』

　　备用的钱;储备金

　　释义：

　　A nest egg is a sum of money that you are saving for a particular purpose.

　　例句：

　　They have a little nest egg tucked away somewhere for a rainy day.

　　What little nest egg we've saved would be gone and we would be left without any money to cover an emergency.